htaccess rewrites itself

Hey guys,

I currently experience a really weird problem on one of my latest projects. All of the sudden my htaccess file seems to be kind of broke. When ever I just call the permalink options in the admin back end, my htaccess gets instantly rewritten, emptying all redirect notes in within the file.

The consequence is, that the page itself doesn’t load anymore. My browser says something like “Redirect Error: The page redirects in an infinite loop” (Dont know the exact phrase in english as my browsers in German).

So, when I copy the content of another projects htaccess file into my currents project htaccess file, I can call at least the side again just as the admin backend. My permalinks are set to default again. But once I call the permalink options page again, the htaccess file gets rewritten again.

I hope I could make my point clear. Anyone here who knows this problem and might have a solution handy?

Thanks in advance,
Marvin