EC168 not scanning - unhandled exception error

[robert2011]

My EC168 based tuner was working fine in GB-PVR, but haven't been able to get it to work NPVR. NPVR detects the tuner, but when I go to setup channels and click scan, the digital channel scanning window appears. Then I click OK there and NPVR crashes with the unhandled exception below, and I have to ctrl-alt-del to close NPVR. If I click on cancel first, it crashes to the desktop. I am using xp sp3 on an EEE 701 (plays 720p happily!). I have 3 mpeg2 decoders: cyberlink, moonlight-elecard and ffdshow. I have tried them all. I have several ac3 decoders too but haven't tried each one systematically. I will report back if I solve it.


************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at DShowHelper.DestroyGraph(IGraphBuilder* pGB)
at Native.DigitalRecorderBase.DestroyGraph()
at NShared.DigitalRecorder.StopAllStreams()
at NShared.DigitalScanningForm.OnClosing(Object sender, FormClosingEventArgs e)
at System.Windows.Forms.Form.OnFormClosing(FormClosingEventArgs e)
at System.Windows.Forms.Form.CheckCloseDialog(Boolean closingOnly)

[Reddwarf]

My EC168 based tuner was working fine in GB-PVR, but haven't been able to get it to work NPVR. NPVR detects the tuner, but when I go to setup channels and click scan, the digital channel scanning window appears. Then I click OK there and NPVR crashes with the unhandled exception below, and I have to ctrl-alt-del to close NPVR. If I click on cancel first, it crashes to the desktop. I am using xp sp3 on an EEE 701 (plays 720p happily!). I have 3 mpeg2 decoders: cyberlink, moonlight-elecard and ffdshow. I have tried them all. I have several ac3 decoders too but haven't tried each one systematically. I will report back if I solve it.


************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at DShowHelper.DestroyGraph(IGraphBuilder* pGB)
at Native.DigitalRecorderBase.DestroyGraph()
at NShared.DigitalRecorder.StopAllStreams()
at NShared.DigitalScanningForm.OnClosing(Object sender, FormClosingEventArgs e)
at System.Windows.Forms.Form.OnFormClosing(FormClosingEventArgs e)
at System.Windows.Forms.Form.CheckCloseDialog(Boolean closingOnly)

Does it find any channels when scanning? That is, before you click OK (takes a while). And have you installed the DirectX that is mentioned as prereq. in the wiki?

[sub]

Can you reproduce the problem, then post your npvr.log?

[robert2011]

Thanks so much for replying.

I reinstalled xp before I read your replies, so haven't got the logs - sorry.

However, npvr doesn't crash on scanning now, it just give me this message:
Unable to start device: Unable to get 'NPVR TS mon'

Also, I just notice on the 'about' page of the settings window a mesage in red saying that 'the directx runtime is not available on this machine. software rendering instead'. I have run the directx web installer twice, and there are no more updates to download.

[Reddwarf]

Thanks so much for replying.

I reinstalled xp before I read your replies, so haven't got the logs - sorry.

However, npvr doesn't crash on scanning now, it just give me this message:
Unable to start device: Unable to get 'NPVR TS mon'

Also, I just notice on the 'about' page of the settings window a mesage in red saying that 'the directx runtime is not available on this machine. software rendering instead'. I have run the directx web installer twice, and there are no more updates to download.

Did you run the installer(s) as Administrator? (right-click->Run as)

[robert2011]

Solved. I uninstalled and reinstalled npvr and noticed that in the 'show details' of the install window it had skipped some of the .ax files (NPVR TS mon.ax I think), so I ran the re-register filters batch file, and now it's working.

[sub]

Ah great - glad you got it sorted.