Just installed Premiere Pro CS5, impossible to run, error code: 1

Hello.

I've installed Premiere Pro CS5 for the first time, but can't run it. I get the following error code:

Uninstall and reinstall the product.

If the problem persists, contact Adobe Technical Support for assistance in specifying the error code that appears at the bottom of this screen.

Error: 1.

http://www.adobe.com/fr/support

(http://puu.sh/2jN4T/6164d5b656)

Using Windows 8. No problems at all during the installation process.

Thanks for any input!