When i go to my course On the right hand side there is:
Notice: Undefined variable: THEME in c:\inetpub\wwwroot\moodle\mod\chat\lib.php on line 26
Notice: Undefined variable: THEME in c:\inetpub\wwwroot\moodle\mod\chat\lib.php on line 29
Notice: Undefined variable: THEME in c:\inetpub\wwwroot\moodle\mod\chat\lib.php on line 32
Hmm...
any suggestions