After CTA3.22, an user had reported "Save Project Error" on Reallusion forum.
The abstract of the reported issue is:
"When attempting to save a project after making some edits I am encountering a "Save Project Error". I then cannot save the project or Save As... as a different name, so my work in progress is lost. The folder I am saving to is sync'd with Google Drive, but is a local folder. Even attempting to "Save As..." to a non-sync'd local folder fails with the same error. This error is making it very difficult to get productive work done in the tool.
Know More about the issue
Reallusion team, had studied and fixed this issue.
We are here to provide hot fix for CTA3.2.2 Pipeline.
This will reduce the chance of "Save Project Error" from happening.
PC operation system users please DOWNLOAD FROM HERE
Mac operation system users please DOWNLOAD FROM HERE
Currently, we only confirm Pipeline edition with this issue, if you are experiencing the same problem with other edition of CTA.
Please reply this post with your edition, Reallusion will provide corresponding hot fix ASAP.