There were a few problems with installing ADF2.2 that we've fixed in ADF2.2.1:
A runtime error occurred on SGI running IRIX6.1, probably due to a compiler error. The problem is circumvented in the new release.
Checking the license file could fail if the domain name as picked up by the license control module was empty.
Suppressing the usage of C code altogether could fail due to a linking problem (calls to the C modules were runtime suppressed but not eliminated from the source code, so that the linker reported unsatisfied externals.