I started myself into trouble by doing a dumb, absent minded thing.
My SSD external hard drive, which happened to have the Gaia star catalog on it ran out of space. I unplugged it, plugged in a new one, and then wondered why PCC wouldn't work. Duh.
So I plugged the old drive back in, that should fix that. But it didn't. For my image of the Crescent Nebula, PCC fails EVERY time (failure to plate solve), regardless of what I do.
Usually PCC fails to plate solve when the RA and DEC coordinates are "too far from the metadata". Yes, they were different, so I used the look up feature and used the online coordinates instead. Failed. Tried the online star catalogs instead of my own catalog. Failed. I carefully checked another usual culprit, my RASA 8 FL is 400 and my ASI2600MC pixel size is 3.76. Those are correctly loaded.
In desperation, I deleted the star catalog on my older drive and re-downloaded the catalog from scratch on the new drive. But everything still fails.
I have linked the image online with Google drive, and a nice guy ran PCC on it on his computer. It succeeded on the first try! What's going on here?
He pasted a screen shot of his PCC process and I carefully filled in the numbers he used. But everything still failed.
I rebooted my computer, didn't help.
I am a hapless, non IT guy. I will copy the link to the image (it's a broadband image that I was hoping to use the stars from to combine with a duo-band image that has better nebulosity but skewed stars). If you have a minute, can you run PCC on it and confirm that it works?
Can one of you sharp computer guys suggest some troubleshooting ideas about what could prevent ONLY my computer from plate solving?
Thanks in advance for any help and any suggestions.