"Please Select a valid path"

I ws having an issue with being able to save anything with WL Pro last week I kept getting a please select a valid path message, and then it would go to a folder I had used for another project. It occurred to me the the master folder of this project was labeled “Jeff 11/16” and I was saving it to a folder inside of that called “mixes”. Is it because of the numbers and / character ?

The / can definitely cause issues. So can blank spaces at the end of the name that are not always obvious to see.

Why not just try it without questionable characters?