Error including libraries: Can't use 'defined(@array)' (Maybe you should just omit the defined()?) at /home/users/web/b2597/pow.callspur/htdocs/cgi-bin/l2adm/db_utils.pl line 342.
Compilation failed in require at /home/users/web/b2597/pow.callspur/htdocs/cgi-bin/l2/modify.cgi line 31.

Make sure they exist, permissions are set properly, and paths are set correctly.