System.InvalidOperationException was unhandled
  _HResult=-2146233079
  _message=Cross-thread operation not valid: Control 'DlgConfigModeHint' accessed from a thread other than the thread it was created on.
  HResult=-2146233079
  IsTransient=false
  Message=Cross-thread operation not valid: Control 'DlgConfigModeHint' accessed from a thread other than the thread it was created on.
  Source=System.Windows.Forms
  StackTrace:
       at System.Windows.Forms.Control.get_Handle()
       at System.Windows.Forms.Form.set_TopMost(Boolean value)
       at MediaPortal.Configuration.ConfigSplashScreen.DoRun() in F:\MediaPortal-1\mediaportal\Configuration\ConfigSplashScreen.cs:line 116
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

--- Configuration Log

[2014-08-13 18:04:19,840] [Config ] [Config Main] [INFO ] - Configuration v1.8.0.0 is starting up on Compatibilty Mode: Windows 8 [6.2.9200.0]
[2014-08-13 18:04:19,840] [Config ] [Config Main] [INFO ] - Debug build: 1.8.0.0
[2014-08-13 18:04:19,840] [Config ] [Config Main] [INFO ] - Verifying DirectX 9
[2014-08-13 18:04:19,840] [Config ] [Config Main] [INFO ] - Using Directories:
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Base - F:\MediaPortal-1\mediaportal\MediaPortal.Application\bin\Debug
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Log - C:\ProgramData\Team MediaPortal\MediaPortal\Log
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Skin - C:\ProgramData\Team MediaPortal\MediaPortal\Skin
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Language - C:\ProgramData\Team MediaPortal\MediaPortal\Language
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Database - C:\ProgramData\Team MediaPortal\MediaPortal\Database
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Plugins - F:\MediaPortal-1\mediaportal\MediaPortal.Application\bin\Debug\Plugins
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Thumbs - C:\ProgramData\Team MediaPortal\MediaPortal\Thumbs
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Cache - C:\ProgramData\Team MediaPortal\MediaPortal\Cache
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Weather - C:\ProgramData\Team MediaPortal\MediaPortal\skin\Default\Media\Weather
[2014-08-13 18:04:19,855] [Config ] [Config Main] [INFO ] - Config - C:\ProgramData\Team MediaPortal\MediaPortal
[2014-08-13 18:04:19,871] [Config ] [Config Main] [WARN ] - Startup: Wizard mode invoked but currently disabled: argument ignored!
[2014-08-13 18:04:19,871] [Config ] [Config Main] [INFO ] - mediaportal.xml does not exist.   Creating a new file and applying deploy tool parameters
[2014-08-13 18:04:19,871] [Config ] [Config Main] [INFO ] - Assembly creation time: 13/08/2014 17:03:40 (UTC)
[2014-08-13 18:04:19,871] [Config ] [Config Main] [INFO ] - Thumbs: MediaPortal is using average thumbnails
[2014-08-13 18:04:19,887] [Config ] [Config Main] [INFO ] - Create new standard setup
[2014-08-13 18:04:19,949] [Config ] [Config Main] [INFO ] - SettingsForm constructor
[2014-08-13 18:04:19,965] [Config ] [ConfigSplashscreen] [INFO ] - Version: Application 1.8.0
[2014-08-13 18:04:26,463] [Config ] [Config Main] [INFO ] - Loading localized Strings - Path: C:\ProgramData\Team MediaPortal\MediaPortal\Language Culture: en  Language: English Prefix: True

--- Output from VS2013 Update 2

'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\assembly\GAC_MSIL\Microsoft.VisualStudio.HostingProcess.Utilities\12.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.HostingProcess.Utilities.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\assembly\GAC_MSIL\Microsoft.VisualStudio.HostingProcess.Utilities.Sync\12.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.HostingProcess.Utilities.Sync.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\assembly\GAC_MSIL\Microsoft.VisualStudio.Debugger.Runtime\12.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.Debugger.Runtime.dll'. 
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'F:\MediaPortal-1\mediaportal\Configuration\bin\Debug\Configuration.vshost.exe'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\assembly\GAC\Microsoft.DirectX\1.0.2902.0__31bf3856ad364e35\Microsoft.DirectX.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\assembly\GAC\Microsoft.DirectX.Direct3D\1.0.2902.0__31bf3856ad364e35\Microsoft.DirectX.Direct3D.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Management\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Management.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization.Formatters.Soap\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.Serialization.Formatters.Soap.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.ServiceProcess\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.ServiceProcess.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Cannot find or open the PDB file.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.Linq.dll'. Cannot find or open the PDB file.
The thread 0x8e38 has exited with code 259 (0x103).
The thread 0x90ac has exited with code 259 (0x103).
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'F:\MediaPortal-1\mediaportal\Configuration\bin\Debug\Configuration.exe'. Symbols loaded.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'F:\MediaPortal-1\mediaportal\Configuration\bin\Debug\Core.dll'. Symbols loaded.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'F:\MediaPortal-1\mediaportal\Configuration\bin\Debug\Utils.dll'. Symbols loaded.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'F:\MediaPortal-1\mediaportal\Configuration\bin\Debug\Common.Utils.dll'. Symbols loaded.
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'F:\MediaPortal-1\mediaportal\Configuration\bin\Debug\log4net.dll'. Module was built without symbols.
log4net:ERROR XmlHierarchyConfigurator: Cannot find Property [encoding] to set object on [log4net.Appender.ConsoleAppender]
log4net:ERROR XmlHierarchyConfigurator: Cannot find Property [lockingModel] to set object on [log4net.Layout.PatternLayout]
log4net:ERROR XmlHierarchyConfigurator: Cannot find Property [encoding] to set object on [log4net.Appender.BufferingForwardingAppender]
log4net:ERROR XmlHierarchyConfigurator: Cannot find Property [lockingModel] to set object on [log4net.Appender.BufferingForwardingAppender]
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration-Error.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
A first chance exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll
A first chance exception of type 'System.IO.FileNotFoundException' occurred in System.Xml.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
[2014-08-13 18:06:00,456] [Config ] [Config Main] [INFO ] - Configuration v1.8.0.0 is starting up on Windows 81 [6.3.9600.0]
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
[2014-08-13 18:06:00,487] [Config ] [Config Main] [INFO ] - Debug build: 1.8.0.0
[2014-08-13 18:06:00,487] [Config ] [Config Main] [INFO ] - Verifying DirectX 9
[2014-08-13 18:06:00,503] [Config ] [Config Main] [INFO ] - Using Directories:
[2014-08-13 18:06:00,518] [Config ] [Config Main] [INFO ] - Base - F:\MediaPortal-1\mediaportal\Configuration\bin\Debug
[2014-08-13 18:06:00,518] [Config ] [Config Main] [INFO ] - Log - C:\ProgramData\Team MediaPortal\MediaPortal\log
[2014-08-13 18:06:00,534] [Config ] [Config Main] [INFO ] - Skin - C:\ProgramData\Team MediaPortal\MediaPortal\skin
[2014-08-13 18:06:00,534] [Config ] [Config Main] [INFO ] - Language - C:\ProgramData\Team MediaPortal\MediaPortal\language
[2014-08-13 18:06:00,550] [Config ] [Config Main] [INFO ] - Database - C:\ProgramData\Team MediaPortal\MediaPortal\database
[2014-08-13 18:06:00,565] [Config ] [Config Main] [INFO ] - Plugins - F:\MediaPortal-1\mediaportal\Configuration\bin\Debug\plugins
[2014-08-13 18:06:00,565] [Config ] [Config log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
Main] [INFO ] - Thumbs - C:\ProgramData\Team MediaPortal\MediaPortal\thumbs
[2014-08-13 18:06:00,706] [Config ] [Config Main] [INFO ] - Cache - C:\ProgramData\Team MediaPortal\MediaPortal\cache
[2014-08-13 18:06:00,721] [Config ] [Config Main] [INFO ] - Weather - C:\ProgramData\Team MediaPortal\MediaPortal\skin\Default\Media\Weather
[2014-08-13 18:06:00,737] [Config ] [Config Main] [INFO ] - Config - C:\ProgramData\Team MediaPortal\MediaPortal
[2014-08-13 18:06:00,768] [Config ] [Config Main] [INFO ] - mediaportal.xml does not exist.   Creating a new file and applying deploy tool parameters
[2014-08-13 18:06:00,800] [Config ] [Config Main] [INFO ] - Assembly creation time: 13/08/2014 17:03:40 (UTC)
[2014-08-13 18:06:00,815] [Config ] [Config Main] [INFO ] - Thumbs: MediaPortal is using average thumbnails
[2014-08-13 18:06:00,831] [Config ] [Config Main] [INFO ] - Create new standard setup
'Configuration.vshost.exe' (CLR v4.0.30319: Configuration.vshost.exe): Loaded 'F:\MediaPortal-1\mediaportal\Configuration\bin\Debug\BassRegistration.dll'. Module was built without symbols.
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
log4net:ERROR RollingFileAppender: INTERNAL ERROR. Append is False but OutputFile [C:\ProgramData\Team MediaPortal\MediaPortal\log\Configuration.log] already exists.
A first chance exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll
A first chance exception of type 'log4net.Appender.FileAppender.LockingStream.LockStateException' occurred in log4net.dll
[2014-08-13 18:06:00,940] [Config ] [Config Main] [INFO ] - SettingsForm constructor
[2014-08-13 18:06:00,987] [Config ] [ConfigSplashscreen] [INFO ] - Version: Application 1.8.0
A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll