I have had elements 10 (both photoshop and premiere) downloaded for a while from a multi-pack and have been using photoshop with no problems at all. Tried to use premiere and start a new project from the welcome screen, but it starts loading, gets to 'Loading Importer Quicktime.prm' then does nothing. I can open the organizer, but nothing else. Tried opening a new project from the organizer, but the same problem. I have uninstalled, reinstalled from disc, and checked quicktime, flash etc are all up to date. Any ideas?
What operating system are you using?
If Windows, have you manually gone to Windows Update and ensured you have the non-critical updates (which dont' download automatically)?
How fast is your processor, how much RAM do you have and how much free, clean, defragmented space is on your hard drive?