If Microsoft Project cannot open a file, you can repair corrupted Microsoft Project files by following the solutions mentioned in this post.

Audacity 3.0.0 replaces .aup with a new .aup3 file format that holds everything in a project including your audio files. That means .aup3 files will be much larger than .aup files.

Open Visual Studio and click the "File" menu. Select the "Open Project" option and navigate to the folder where you saved your Visual Basic project.