Hi Chris,
When Audacity crashes, does a ‘Problem Report for Audacity’ window pop up with a bunch of debug info?
Here is an example: How to fix Unable to load the "mod-openvino" module error? - #9 by roxbororob
Also, what CPU are you using, specifically?
And don’t worry about those FFMpeg errors that you see in the log, they are unrelated to this crash (and actually expected, even if everything is working).
Thanks,
Ryan