Token error for all new users??

[luggz]

I need some help i have all my new members getting this error every time they login, select UserCP, an after the sign up an they click profile, options or userCP. I don't get this error my self but all new members do, how ever if i change the Style to the default style no one gets that error. Can some one point this out or maby one here has had this issue before as well?

Your submission could not be processed because a security token was missing or mismatched.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.

Thanks

-Luggz