I keep getting this 'cannot save plan file' and using save as isn't solving the issue

[DAYODOTDESIGN]

I keep getting this 'cannot save plan file' and using save as isn't solving the issue

 

Operating system used: Windows 11

[CosminF · Accepted solution]

You might want to try going through these steps:
https://support.graphisoft.com/hc/en-us/articles/31814781572369-Cannot-save-Plan-file-warning

[DAYODOTDESIGN]

Cntrl + Shift + S - Renaming the file - and choosing new saving path, worked.