rtcw on linux

okay, i got this problem: i just installed rtcw 1.41b on my gentoo linux. when i try to start it this error appears:

Quote

kai@kai ~ $ rtcwmp
Wolf 1.41b-MP linux-i386 May 8 2006
----- FS_Startup -----
Current search path:
/home/kai/.wolf/main
/opt/rtcw/main/mp_pakmaps6.pk3 (81 files)
/opt/rtcw/main/mp_pakmaps5.pk3 (35 files)
/opt/rtcw/main/mp_pakmaps4.pk3 (52 files)
/opt/rtcw/main/mp_pakmaps3.pk3 (83 files)
/opt/rtcw/main/mp_pakmaps2.pk3 (47 files)
/opt/rtcw/main/mp_pakmaps1.pk3 (34 files)
/opt/rtcw/main/mp_pakmaps0.pk3 (21 files)
/opt/rtcw/main/mp_pak5.pk3 (77 files)
/opt/rtcw/main/mp_pak4.pk3 (5 files)
/opt/rtcw/main/mp_pak3.pk3 (76 files)
/opt/rtcw/main/mp_pak2.pk3 (3 files)
/opt/rtcw/main/mp_pak1.pk3 (308 files)
/opt/rtcw/main/mp_bin.pk3 (4 files)
/opt/rtcw/main

----------------------
826 files in pk3 files
----- CL_Shutdown -----
-----------------------
Sys_Error: Couldn't load default.cfg - I am missing essential files - verify your installation?
kai@kai ~ $

look into my profile for sys and os specs, installation runs just fine without any errors. any1 any suggestions?

edit: cd image is also mounted:

Quote

/home/kai/My Downloads/Return to Castle - Wolfenstein/RTC-W.ISO on /mnt/cdrom type iso9660 (rw,loop=/dev/loop0)