Hi Ruurd, make sure you're not running any kind of modified or "cracked" version of MoI - that's currently the only kind of situation that I know of where you can run into this problem.

If you're not running a cracked version then maybe your installed version has become corrupted or something, try re-installing it and if you send me an e-mail at moi@moi3d.com with your license key in it (or the name and e-mail address that you ordered with) I can send you a new installer to make sure your installer is not corrupted somehow.

But I'm probably mistaken about you running a cracked copy, because surely you wouldn't post questions in a program's official forum while you're trying to run a cracked version of it, right?

- Michael