Problem with styles after update to 3.6.6

[Arphex]

Hello @ all!
I have a problem after the update to vB 3.6.6.
If i want to edit my styles i got an error.

Aktualisiere Styleinformationen f?r den Style '' und seine Unterstyles...
...
Schwerer Fehler: Invalid styleid specified in /includes/adminfunctions_template.php (Zeile 327)
#0 vb_error_handler(256, Invalid styleid specified, /srv/www/vhosts/boardfun.de/httpdocs/includes/adminfunctions_template.php, 327, Array ([styleid] => 0,[doreturn] => 1,[parentids] => ,[vbulletin] => ...............

Arphex,[displaygrouptitle] => Administratoren,[displayusertitle] => Administrator,[realstyleid] => 0,[usercrosslinking] => 1,[permissions] => Array ([usergroupid] => 6,[title] => Administratoren,[description] => ,[usertitle] => Administrator,[passwordexpires] => 0,[passwordhistory] => 0,[pmquota] => 100,[pmsendmax] => 0,[opentag] => ,[closetag] => ,[canoverride] => 0,[ispublicgroup] => 0,[forumpermissions] => 66666666,[pmpermissions] => 7,[calendarpermissions] =>

Anyone have an idea???

Thanks
Arphex