Guitar Pro 6 on Fedora 15

I had some problems installing Guitar Pro 6 for Linux on Fedora 15.
The problem was that, after extracting the .deb file on the cd, on /opt/ the updater would fail when I ran it as a user because of wrong permissions, and if I chmodded 777 the Guitar Pro directory, or ran with sudo, It would not run at all.

So, what I did:

1. I ran ./GPUpdater as the regular user, with the original directory permissions
2. While running, I chmodded 777 /opt/GuitarPro6
3. Updated

And finally (I'm at the third step right now) changing to the original 755 permissions.