Digital Tuner fails to start

[RedTurtle]

I had been using gbpvr for awhile successfully with my AverMedia combo NTSC/ATSC tuner.

Recently, the digital tuner has stopped working completely. The analog tuner still works, and gbpvr recognizes that there is a digital tuner, but fails to start it up. I know it is not the hardware, because I have tested it in a different system using windows media center, and it works just fine.

I have tried completely uninstalling gbpvr, and the device drivers. When I reinstall, and add the new capture source, it fails to begin scanning for new drivers, and I get a message about the device already being in use. After this dialogue, the scanning window pops up and I get this error:

[INDENT]Unhandled exception has occurred in your application. If you click continue, the application will ignore this error and attempt to continue...[/INDENT]

The error details begin with this (the full message is too long to post here):
[INDENT]

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at NativeUtilities.BDARecorder.SubmitTuningRequest(String tuningRequest, Boolean force)
at NativeUtilities.BDARecorder.StartScanTransponder(String transponder, Int32& signalStrength, Int32& signalQuality)
at Config.Plugins.x501d1ffea8b79320.x692a1118e1794d77(Object xdf2e3583f942db7b, EventArgs xc4f45905cb1fc7ba)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


[/INDENT]

[RedTurtle]

sorry for the double post, I have attached the full error message.

gbpvr version 10213

[sub]

I cant actually see that error message in the logs. Did you zip the logs immediately after it happened? (ie, should it be in the most recent set of log files?)

[RedTurtle]

That's odd.

I tried again. I opened config, went straight to capture sources, clicked edit on the digital source, and hit map digital channels to EPG channels.

[sub]

2008-07-17 18:27:20.156 ERROR Could not CoCreate SystemTuningSpaces

It looks like system tuning spaces are missing from your machine. I'm not sure what you'd do to correct this. Its normally something that is present on all Windows installs.

[RedTurtle]

Could this be the result of a particular windows service or group of services being disabled?

[sub]

To be honest, I dont know.