We have investigated the error and that's why it appears:
mark jonas:
In the lang file in my case eng.php i had edit the $l_accessDenied like so:
$l_accessDenied='Operation can not be completed. Either you are trying to access a section of the forums, which you do not have access to, either trying to execute an action, which is not allowed for you or you are a new user. If you are a new user it may take up to 24 hours to use your account. if you are not a new user or it has been over 24 Hours, Please contacted Skills (ingame) with what you are trying to do or that your account hasn\'t been accepted. Thank you.';
Now the part in red is where the java script (if that is what your using) doesn't like it on changing that to have not the PM system is working.
It is absolutely right - this is the $l_accessDenied var which causes this issue. Since the value of this variable is used both in PHP script and JavaScript, I would only recommend to avoid any kind of apostrophes used in translation. I will put this in miniBB manual. Currently I've just changed "hasn't" to "has not" which seems the right sentense in all aspects.
