can't run diagnostics in itunes

Have you tried reinstalling iTunes and QuickTime?

Go into Control Panel > Add/Remove Programs
Remove these applications:
1. Apple Software Update
2. Apple Mobile Device Support
3. iPod for Windows (this may or may not exist, either way, it's not needed so we can remove it)
4. iTunes
5. QuickTime

Restart the computer
Download & Install the Windows Installer Cleanup Utility:
http://support.microsoft.com/kb/290301/
Launch the Utility: Start > Programs > Windows Install Clean Up
Select any of the above mentioned applications, and click Remove

Restart the computer again
Download & install iTunes again from here: http://www.apple.com/itunes/download/

CG

I have the same problem - itunes crashes every time i try to run any diagnostic. I tried your suggestion, uninstalling everything and reinstalling, and it did not help.

Does anybody know the solution? It's kinda weird that the DIAGNOSTICS won't work... we can't even check what's wrong ^.^ I tried reinstalling and all that stuff.

I feel your pain; I recently installed iTunes (I'm a late bloomer) and despite all my best efforts, iTunes crashes whenever I attempt to run the diagnostics features.

For any iTunes techicians listening in, you might want to look into this........