After the installation of Photoshop CS5, now Illustrator CS5.1 will not open!

I tried to open it from another user account; the same problem.  I have Illustrator CS2 installed as well. It works very well.  Two versions of Illustrator work together for more than a year.  What else can I try?

Looks as the Photoshop CS5. The Illustrator is CS5.5. You can better served by uninstalling times, run the cleanup tool and reinstall Photoshop Illustrator before.

Use the CC cleaning tool to resolve installation problems. CC, CS3 - CS6

Tags: Illustrator

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