I get the message 'There's not enough space left on the drive where this app stores its cache' (n% left)...'
But I have 70+GB free on my c drive...
When I go to 'Save as' gif regardless, I get an error '0.png' not found...
~I'm not sure what's happening, I'll need more details.~
It would be helpful if you could open the Feedback window and send me the log files (if any of it shows up).
Can you show me a screenshot of Options > Temporary Files? I want to see where the cache is located.
The "Save As" .gif is working now so maybe not worth investigating... but I still get the no space left warning:

There's no log file in the 'Feedback' window.
Here's the 'Temporary Files' form:

Thank you. I'll adjust the message to appear only if there's less than 2 GB of space left, instead of being based on a percentage.
Done.