i cant munge my new side's anymore... the mungelog says: ERROR[req\cis_inf_engineer.req]:Could not open ..\..\common\munged\pc\core.files for input. DOS reports:
No such file or directory: same thing on everything else... how can i fix? i tryed reinstalling, moving to secondary directory, splitting the world folder from the bf2_modtools, but it wont change...

Perhaps something was misspelled somewhere along the line, it would do you good to go through there and make sure everything is typed correctly. Also you may want to try a manual clean.

Do a full, manual clean then remunge with only Common checked. After that, remunge your sides and continue as normal.