Now that freemangordon has compiled a kp50 offshoot named kernel-cssu (the thumb2 thread on TMO elaborates on this), Cleven searches for the compat-wireless files in /opt/lib/modules/2.6.28.10-cssu1/ instead of ...power50, where kernel-cssu still keeps the files. The obvious solution works.
Saturn, I think Cleven should mention if it completely fails to find and load compat-wireless when the user prompts to load them using the button in question. Now, it just makes it seem like it actually loaded them (button turns red) and the only thing hinting about something going wrong is the fact that the MAC address bar goes blank.
P.S. Saturn, could you implement a toggle to remove the "this kernel is perhaps incompatible with Cleven" yellow banner completely at the user's discretion?