Adobe Illustrator

I am not able to save my files and Adobe Illustrator gives the message ‘An Unknown Error has occurred’… I have also tried copying the work into a new ai file however this also will not save. This is has happened to me about 5 times since I updated to CS6. Anyone else having this issue?

I’ve found a solution that temporarily worked.

Reset the settings, workspace and preferences in illustrator to the defaults. This worked for a few saves but then the Unknown Error returned. If you are still experiencing the issue I can suggest this program Illustrator Repair Toolbox