Heroes 6 - Discussion

Help! I bought the official version, deleted the old repack, and now when I install the new one, I get an error about some kind of firewall that I don't even have! (The error occurs both during installation and uninstallation). Then, once the game is installed, I launch it. The Ubisoft launcher gives error number 2, and the game doesn't start. I've been messing around with it for 2 hours now, searched the entire internet, but found nothing. There's no option to uninstall or install programs in the Ubisoft software. I tried simply deleting it (made a copy first), but when installing, even with completely different versions of the launcher, up to "1.0.0," the following happens: "A window pops up, I click OK, then I agree to the terms and click OK again. And then, MAGIC! As soon as the installation should start, a window with a progress bar appears for a fraction of a second and then disappears, and that's it... and that's the whole story. I've tried everything! I even manually cleaned all the information about the Ubisoft launcher from the registry (that's old-school!). And I even tried installing it in safe mode... the same thing happens, with different versions and... I'm at my wit's end. Help!