Do a recording then post the GBPVRRecordingService.exe.log and GBPVRRecordingService.exe-native.log and I'll see if there is anything obvious happening.
I noticed that the information that is usually logged in the files you requested was being written to some new log files (something like BDARemote...) which started after enabling the MVP stuff. I disabled it and cleared out the logs and did another one and it appears to show the details for the recording.
Try running the ReRegisterFilters.bat file. If you're on vista you'll need to start a command prompt with "run as administrator" and run it from there.
Maybe try creating a c:\temp directory, and in regedit set HKEY_LOCAL_MACHINE\Software\Devnz\LogPSIProcessing =2 (DWORD), then try a really short recording (one minute or less). Zip and attach the c:\temp\psi.log that got created. Delete the registry setting - it generates massive temporary files.