Hi Benny,
 
I had the same problem as you. After I statically linked the radiusclient library in the both radius modules this problem seems to be resolved.
http://lists.iptel.org/pipermail/serusers/2003-February/000419.html
 
However radius authentication still doesn't work and the developer said:
 
"the path is not staticaly linked, it should be resolved by you
dynamic linker, I don't know where is the problem, it seems to me that
there is some problem with radiusclient libraries on your system, "
 
I use Solaris 8. Now I am trying to recompile and reinstall radiusclient library. If I find out something, I'll tell you.
 
regards, yang