fseek: stream does not support seeking

Hi, i sucsessfully connected to my server and edited files how i would like to have it....but there is problem....
adminmod loads every plugins and says start processing loglines...and then it comes error like this:

warning in e:\Program Files\Activision\Call of duty 4 - Moder Warfare\adminmod\adminmod\classes\parser.class.php:31 =>fseek<>: stream does not support seeking

any sugestions ?

i also gived all premissions to all folders before games_mp.log

thx

EDIT:
server is rented from hrvatski-hosting.com and it is runned by linux
btw. php crashes after that error...