ITunes opening but crashing after "checking itunes library"

Question

My computer has issues with multiple applications, which mostly are connected to itunes/ilife. iPhoto, iWeb, Front Row and iTunes all crash at certain points, but iMovie opens fine, although I haven't tested anything within it other than playback. YouControlTunes (an iTunes controller) also has issues. Reinstalling the OS has made no difference, nor has reinstalling iTunes. I will try reinstalling iLife (again).
iTunes did work after reinstalling the OS the first time after trashing iTunes and iLife and other applications that used up hard drive space (was running low so wanted to make sure Mac OS X installed fine), but after reinstalling iLife and Firefox and other applications then iTunes stopped working again. Garageband and iDVD weren't reinstalled.
I shall try trashing the iTunes library.
Also, the application Mactracker and the installers for 1.0.4 & 1.0.5 of Age of Empires III did not work, so the problem is presumably not iLife.

Answer 1

Try this;-
try removing the Genius database. In the "Finder" go to the /username/Music/iTunes/ folder and delete the "iTunes Library Genius.itdb" file. This may allow the program to launch again. This file will be recreated upon first use of the "Genius" feature.
and
I found that the TSLicense plugin was causing the problem.
From the log:
PlugIn Path: /Library/Frameworks/TSLicense.framework/Versions/A/TSLicense
PlugIn Identifier: net.telestream.license
This pIugin is installed with the Flip4Mac Windows Media Components. I solved the problem by uninstalling the WM Components via the uninstaller at /Applications/Flip4Mac/Flip4Mac WMV Uninstaller.pkg, after which iTunes opens successfully.
worked for me!