Null Pointer Exception trying to edit ATSC channel/tuner info

[Dano4Droid]

Hi,

Thanks for writing a great application! I need some help with the latest patched version. (I am running it on Windows 8 pro) I am getting a Null Pointer Exception when I try to manually change the physical channel information using the latest patched version.

My situation. I have two identical ATSC channels with the same program. 11-1, and 19-1. 11-1 is a weaker signal - so I am trying to switch the channel to 19-1. The channel scan only picks up 11-1 for some reason. (I know that 19-1 also exists by using the HD-Homerun tuner setup.) When I try to edit the channel manually by changing physical channel 11-1 to 19-1 - i get a error message that resembles a null pointer exception message. I tried manually changing other channels - same null pointer exception message.

Thanks for the help,

Dano

[sub]

Where exactly are you trying to edit this? Channel numbers are numeric numbers in NextPVR. You cant use a dot or dash in the channel numbers. You can use them a channel name though.

[Dano4Droid]

Hi, This is in the device setup. I double clicked on a channel (channel 11). A new modal dialog opened, where I changed channel "11" to "19" and clicked the "ok" button. I did not enter any dashes in the channel numner - just "19".

This is from the exception message:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at NShared.DigitalEditChannel.buttonOK_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.6387 (Win8RTM.050727-6300)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll

[sub]

I've just had a try at reproducing this but the problem didn't happen for me. Was there any other things you can think of that might be a factor? Was the channel number you changed to available, or in use by another channel? What epg source was the channel using?

[Dano4Droid]

Thanks for your help. The only thing strange about my system is that i have 3 ATSC tuners - (2 hd home run ATSC tuners, and one Haupgauge 1800 ATSC tuner)

i fixed the channel information using SQLLite Manager for firefox - so it's no longer an issue for me. While fixing the channels - i also noticed that some of the "tuning" columns for a few of the channels in the CHANNEL_MAPPING table for some of the devices did not match the other devices. For example "CBS" for device 1 would have physical channel 21 - while "CBS" for device 2 would be associated to physical channel 35. When I initially set up the additional tuners using NextPvr's UI - I requested that NextPvr copy the channels from the previously setup device. (You would expect the same tuning information for the same channel) - So I think there is some type of channel setup/modification bug when dealing with multiple tuners.

[sub]

You might need to zip and attach your npvr.db3 file so I can try it with your database. If it's too big, do an 'empty epg' before zipping it.

[Dano4Droid]

i attached my revised npvr.db3 file. (all the channels have been corrected in the CHANNEL_MAPPING table)
Thanks for your help

[ATTACH=CONFIG]34961[/ATTACH]

[sub]

Can you also attach your c:\nextpvrstuff\xmltv.xml?

[Dano4Droid]

Here it is. Thanks.

[ATTACH=CONFIG]34962[/ATTACH]

[sub]

Even with your database and your xmltv file, I'm not able to reproduce this. Do you have the patches installed from: http://forums.nextpvr.com/showthread.php...arted-info