Generlam:
You may want to delete your aiprefs file and see if that helps. This file is not replaced when you re-install, you have to do it manually.
The aiprefs is a file that Illustrator uses to keep your preferences (not just the ones in the Edit>Preferences menu, but also palette locations, specific tool settings etcetera) and each time you close Illustrator it writes to that file. For some reason, after a while the aiprefs file can become corrupted. Then, you need to delete it, which will restore Illustrator to factory defaults. Some people keep a good copy of aiprefs in a separate folder to simply drop it into place over the top of a corrupted one, some people (like me) make the prefs read-only to avoid having to re-customize everything each time a problem occurs.
What you need to do:
1. Close Illustrator (ABSOLUTELY ESSENTIAL);
2. Locate aiprefs. It has no file extension, and if you do a search you have to enable search for Hidden and System files. In XP, the location is:
File:///C:/Documents and Settings/Owner/Application Data/Adobe/Adobe Illustrator CS Settings
You can copy and paste that location directly into your browser's address bar, you may have to change "owner" to your user name. It will take you to the containing folder;
3. Delete the file;
4. Open Illustrator, customize, and then save a backup or make it read-only.
Hope this helps.
Bert
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