We are investigating this issue. For now, we have found some fixes that will work for some of you. As for the rest, we're still looking into it. If you have not already done this, do it to see if it works for you.
[u][b]First Potential Solution[/b][/u]
1. Delete the [b]GAMEGUARD [/b]folder [b][u]only[/u][/b] at this path:
(If you changed the default installation path:) [your installation path]\Binaries\GameGuard
2. Start up the game.
3. If you still get an error, I highly recommend to repeat this 2-3 times. (Update: I experienced the error myself, and deleting the folder fixed it for me.) If the error persists, move on...
[b][u]Second Potential Solution[/u][/b]
1. Read GameGuard's own FAQ and try out their solutions:
[b][u]Third Potential Solution[/u][/b]
[i]NOTE: This is a player submission. If you are paranoid about downloading files, proceed at your own risk! I simply cannot verify for myself, due to internal policy that blocks staff from external links such as these. However, some users report it to work. Credit to CyberRion and heikkiwuut for this! Original thread: http://www.aeriagames.com/forums/en/viewtopic.php?t=1624611[/i]
1. Replace your GameGuard folder with this: http://www.mediafire.com/?1ke91od664gsk12
[b][u]Still No Solution?[/u][/b]
We are getting a GameGuard patch very soon! Please wait until then!