Hello, I just tried to open an Audacity project that I have been working on and I got the error message “Cannot import AUP3 format. Use File > Open instead” so naturally, I tried to follow the instructions and got the same error. I then tried to open a different project, when I realized that doesn’t work either. I tried every project and learned that none of them would open. I am currently using Audacity 3.1.0 on Windows 10 Pro, though I just updated Audacity before writing this because I realized I was still on 3.0.2, both versions have this problem for me.
Any help is appreciated, and feel free to ask any questions. Thank you!