Adobe has that error documented on their web site. BUT you didn't share the "quoted" error message so searching and sharing you the link is too much work. Also, you need to reveal the Adobe version and what OS.
Just use Google and Adobe's support links since you can find it very quickly.
Trying to save a Photoshop file on 40G HD with 10G free. Have many memory intensive art/animation programs, but plenty memory left. Any suggestions?