1. uinstall EU
2. delete anything EU related on your computer (not screenshots)
3. Download CCleaner and run that. if you already have it go to step 4.
4. Run CCleaner.
5. reinstall EU, preferably in another directory than the one you used before.
6. enjoy the game
that process took me 1 hour 10 minutes with a download speed of 500kbits - 1.5 mbits