Object Reference Not Set error

[Jim Stefancic]

I've used PHD2 successfully for a couple years now, but I have recently installed a new guide cam (Toupcam). I am using latest PHD2, ASCOM 6.3 and correct driver for cam. However, when I try to set up guiding I keep getting an error: "Object reference not set to an instance of an object". What does this mean? How can I fix it? Help!

Jim Stefancic

[Andy Galasso]

Jim,

Let's start by taking a look at your PHD2 Debug Log (Getting Help).

Andy

[Jim Stefancic]

Andy,

Attached is log that shows error.

Jim

[Andy Galasso]

Thanks, Jim.   Is this the first time you have tried using that camera ASCOM driver?  Did it work before you upgraded the ASCOM platform?

Andy

[Jim Stefancic]

Andy,
The same problem with ASCOM 6.2 or 6.3. BUT...after several hours reloading all the drivers and ASCOM suites, I finally figured out what was broke! When I upgraded to ASCOM 6.3, I also upgraded everything else including the Toupcam camera driver. It turns out that the camera, though Toupcam ID, requires a Mallincam driver to make it work, and I had inadvertantly "upgraded"  over the original install. The whole issue of re-branding for OEM cameras, that then also require slightly different drivers, stumped me. Thank you again for trying to help this poor old astro soul (lol).

Jim

[Andy Galasso]

Hi Jim,

Thanks for the update, glad to hear you got it sorted out!

Andy