Failed to save document: … Save failed because the file could not be created.

[ChrisFCarroll]

Opened a document created yesterday, did an hour's work, choose Save:

Failed to save document: Contexts of Solution Design and Delivery

Save failed because the file could not be created.
Do you wish to save the document to a new file?

Answer : Yes

Failed to save document: /Users/chris/Desktop/Contexts of Solution Design and Delivery.afdesign
Save failed because the file could not be written to.

I tried saving to other disks, different name etc. No good.

Lost work.

[benjabi]

I just went through this too.

My file was in a locally-syncd Google Drive folder and Drive had crashed.
I ended the Google Drive process in Task manager, then started it again and save completed without a problem.