PP has been very good to me for many years, and it's rarely hiccuped... but today I woke up to the hard drive on my PC churning away, and waking up the display, I got an error message front and centre.
I absentmindedly dismissed it before taking a screen grab, but the gist was that PP had been terminated due to a runtime error... no further details recalled, unfortunately.
When I restarted PP to see what was up, I noticed that my main Gmail account was empty. Checking for messages started reloading headers (~ 17,000-ish) but at ~ 10,000, this popped up, with no further info:

I'm using Avast free antivirus in case that's a contributing factor... and I'm not ashamed to admit this is still on Windows 7.

Any suggestions re: logs, etc.?
Thanks in advance!