Windows XP SP3.
I had to reinstall premiere and now it doesn't load.
I reinstalled it because I restored my system to a point which made it have few bugs.
Now, when I just click the exe file - I get the window of license agreement, I click accept and after that nothing loads. Not even a background process.
So, I uninstalled premiere again (and uninstalled everything it offered me to uninstall (left after effects installed)) and then reinstall -
The first try failed with a message that few components weren't completely installed. It asked me to try again and the next time was successfull.
But as I said, even after a successful installation, premiere doesn't work.
When you did the Uninstall, did you run the Adobe Cleaner Tool, before you Installed CS4?
Creative Suite Cleaner Tool: http://www.adobe.com/support/contact/cscleanertool.html
I would Uninstall, then run the Cleaner Tool a few times, rebooting between each run, and then Install CS4.