Hi,
I had the same problem, but I didn’t want multiple Windows users to deal with so I did this and now Premiere Pro is working for me:
1. Created a new Windows user and launched Premiere Pro. It worked fine.
2. Located the folder: My Documents/Adobe/Premiere Pro and copied it to a thumb drive.
3. Switched back to my original Windows user account.
4. Located the folder My Documents/Adobe/Premiere Pro and deleted it and placed the folder from my thumb drive in it’s place.
5. I located the file My Documents/Adobe/Premiere Pro/3.0/Layouts/WorkspaceConfig and deleted it. I would recommend that you just cut it from this folder and paste it on the desktop in case you are afraid of deleting it.
6. I restarted my entire computer.
7. After restart I was able to launch and use Premiere Pro just fine.
8. I then deleted the temporary Windows user account.
I hope this “combined solution” works for others. It’s a combination of the advice of others from above, but doesn’t make you deal with the permanent workaround of multiple Windows users.
Cheers!