WebEPG stalls if grabber is missing (1 Viewer)

[vuego]

MediaPortal Version: 1.2.0 Alpha

I accidentally removed a grabber file which I had mapped to a channel and what happened was that WebEPG couldn't finish grabbing. It just stops grabbing and TVguide-writing.xml is locked.

Here's how to reproduce:
1. Map a TV channel to any grabber
2. Remove the grabber file
3. Click Grab now!

2011-04-10 09:11:24.915163 [WebEPGImporter(33)]: plugin:webepg import failed
2011-04-10 09:11:24.918093 [WebEPGImporter(33)]: Exception : System.IO.FileNotFoundException: Could not find file 'C:\ProgramData\Team MediaPortal\MediaPortal TV Server\WebEPG\grabbers\SE\yourdiscovery_com.xml'.
File name: 'C:\ProgramData\Team MediaPortal\MediaPortal TV Server\WebEPG\grabbers\SE\yourdiscovery_com.xml'
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
at System.IO.StreamReader..ctor(String path, Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize)
at System.IO.StreamReader..ctor(String path)
at MediaPortal.WebEPG.WebListingGrabber.Initalise(String File, Int32 maxGrabDays)
at MediaPortal.EPG.WebEPG.Import()
at TvEngine.WebEPGImport.ThreadFunctionImportTVGuide(Object aparam)

It would be preferred that the channels with missing grabbers is just ignored and perhaps a warning message in the log file