Ah, found it in the help - I can get the previous log opened before it closes the program - last few lines :
0011125: 4840: General: RunProgram: Start
0011125: 4840: General: RunProgram: Filename: C:\Media Center 14\JRWorker.exe / Parameters: /AnalyzeDevices "C:\Documents and Settings\Administrator\Application Data\J River\Media Center 14\Temp\Devices (input) - 4840.xml" "C:\Documents and Settings\Administrator\Application Data\J River\Media Center 14\Temp\Devices (output) - 4840.xml"
0011141: 4840: General: RunProgram: Performing ShellExecute...
0011172: 4840: General: TopLevelExceptionFilter: Unhandled exception -- program crashing
0011172: 4840: General: TopLevelExceptionFilter: Message: 0, wParam: 0, lParam: 0, Window class:
0001406: 1208: Reader: CLocalReader::OpenInternal: Opening: C:\Media Center 14\Skins\Standard View\Noire\main.xml
0001422: 1208: Reader: CLocalReader::Close: Closing: C:\Media Center 14\Skins\Standard View\Noire\main.xml
0001422: 1208: Reader: CLocalReader::OpenInternal: Opening: C:\Media Center 14\Data\Default Skin Items\Standard View\main.xml
0001422: 1208: Reader: CLocalReader::Close: Closing: C:\Media Center 14\Data\Default Skin Items\Standard View\main.xml
0001422: 1208: Reader: CLocalReader::OpenInternal: Opening: C:\Media Center 14\Skins\Standard View\Noire\main.xml
0001437: 1208: Reader: CLocalReader::Close: Closing: C:\Media Center 14\Skins\Standard View\Noire\main.xml