Problem loading wctdm - conflict with zaptel?

I got a problem loading drivers for my analog board (A400P). Using asterisk, SuSE 10.2 and dahdi-linux-complete-2.2.1-rc2+2.2.1-rc2.

modprobe dahdi works without any errors, but when i try to load wctdm it fails. There seams to be some kind of competition for the device between dahdi and zaptel.

modprobe wctdm opermode=SWEDEN WARNING: Error inserting zaptel (/lib/modules/ Device or resource busy FATAL: Error inserting wctdm (/lib/modules/ Unknown symbol in module, or unknown parameter (see dmesg)

modprobe --show-depends wctdm insmod /lib/modules/ insmod /lib/modules/ insmod /lib/modules/

Here is what’s in dmesg:

Unable to register tor device on 196 wctdm: Unknown symbol zt_receive wctdm: Unknown symbol zt_qevent_lock wctdm: Unknown symbol zt_ec_chunk wctdm: Unknown symbol zt_transmit wctdm: Unknown symbol zt_unregister wctdm: Unknown symbol zt_hooksig wctdm: Unknown symbol zt_register

I hardly know any linux or asterisk yet, so your help solving or explaining this will be appreciated!