I've just finished compiling and installing mono from CVS. The mono runtime works but mcs gives me this error: The assembly corlib.dll was not found or could not be loaded. It should have been installed in the `/usr/local/lib' directory. I checked in /usr/local/lib and verified that it was there. I also edited /etc/ld.so.conf and ran ldconfig. I don't know why it can find it.