Unable to install because a newer version of this product is already installed. (1 Viewer)

[sbn]

TV-Server Version: -
MediaPortal Version: 0.2.3 RC2
MediaPortal Skin: -
Windows Version: Windows 2003 Server SP2
CPU Type: Athlon XP2400+
HDD: 300 GB
Memory: 1GB
Motherboard: Aopen
Motherboard Chipset: nForce 2
Motherboard Bios: Award
Video Card: onboard GF4MX
Video Card Driver: 81.98
Sound Card: nVIDIA soundstorm
Sound Card AC3: Yes
Sound Card Driver: 4.62
1. TV Card: Hauppauge PVR150
1. TV Card Type: Analog
1. TV Card Driver: 2.0.48.24227
MPEG2 Video Codec: -
MPEG2 Audio Codec: -
Satelite/CableTV Provider: -
HTPC Case: Aopen XCCUBE EZ18
Cooling: -
Power Supply: -
Remote: Hauppauge
TV: Philips 28" CRT
TV - HTPC Connection: S-Video

Hi. I'm trying to install Mediaportal 0.2.3 RC2 but alle the time, i get the error
"Unable to install because a newer version of this product is already installed."

I previously had 0.2 RC2 installed a year ago, and was unable to remove it, as it wasnt in the Add/remove programs menu. So i deleted the mediaportal folder and deleted all keys with "mediaportal" in the registry, but i still get the error above.

I tried to install an old version, as suggested in the guide here https://forum.team-mediaportal.com/unable_install_because_newer_version_product_already-t12519.html
but then i got the message "Another version of this product is already installed..."

What should I do? what does the installer check for when looking for previously installed versions of MP?

This is the install.log for an install attempt:

The following properties have been set:
Property: [AdminUser] = true {boolean}
Property: [ProcessorArchitecture] = Intel {string}
Property: [VersionNT] = 5.2.2 {version}
Running checks for package '.NET Framework 2.0', phase BuildList
Running external check with command line "C:\DOCUME~1\Default\LOCALS~1\Temp\VSD25E.tmp\dotnetfx\dotnetchk.exe"
Process exited with code 1
Setting value '1 {int}' for property 'DotNetInstalled'
Reading value 'Version' of registry key 'HKLM\Software\Microsoft\Internet Explorer'
Read string value '6.0.3790.3959'
Setting value '6.0.3790.3959 {string}' for property 'IEVersion'
The following properties have been set for package '.NET Framework 2.0':
Property: [DotNetInstalled] = 1 {int}
Property: [IEVersion] = 6.0.3790.3959 {string}
Running checks for command 'dotnetfx\instmsia.exe'
Result of running operator 'ValueExists' on property 'VersionNT': true
Result of checks for command 'dotnetfx\instmsia.exe' is 'Bypass'
Running checks for command 'dotnetfx\WindowsInstaller-KB893803-v2-x86.exe'
Result of running operator 'ValueExists' on property 'Version9x': false
Result of running operator 'VersionLessThan' on property 'VersionNT' and value '5.0.3': false
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsi' and value '3.0': true
Result of checks for command 'dotnetfx\WindowsInstaller-KB893803-v2-x86.exe' is 'Bypass'
Running checks for command 'dotnetfx\dotnetfx.exe'
Result of running operator 'ValueNotEqualTo' on property 'DotNetInstalled' and value '0': true
Result of checks for command 'dotnetfx\dotnetfx.exe' is 'Bypass'
'.NET Framework 2.0' RunCheck result: No Install Needed
Running checks for package 'Windows Installer 3.1', phase BuildList
The following properties have been set for package 'Windows Installer 3.1':
Running checks for command 'WindowsInstaller3_1\WindowsInstaller-KB893803-v2-x86.exe'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsi' and value '3.1': true
Result of checks for command 'WindowsInstaller3_1\WindowsInstaller-KB893803-v2-x86.exe' is 'Bypass'
'Windows Installer 3.1' RunCheck result: No Install Needed
Launching Application.
Using MsiInstallProduct with package path 'F:\MediaPortal_0.2.3_RC2\Setup.msi' and command line ''

 

[sbn]

I fixed this myself by using this:

http://support.microsoft.com/kb/290301

I just removed the entry called "1.0.0"

The entry had no name or anything in the list of programs...