CREATELANG in pgsql 7.3.2 failing

hi,

i've successfully installed Postgresql 7.3.2 on Mac OSX 10.2.4, and can
access/administer as necessary

except, i can't seem to CREATELANG, specifically plpgsql .....

the command:

createlang --pglib=/usr/local/pgsql/lib --dbname=apache_auth plpgsql

simply returns:

ERROR: Load of file /usr/local/pgsql/lib/plpgsql.dylib failed: no error
message available
createlang: language installation failed

my LOG file has nothing further:

...
LOG: database system is ready
ERROR: Load of file /usr/local/pgsql/lib/plpgsql.dylib failed: no error
message available

"no error message" is not very helpful :-(

i tried a clean install -- all went without a hitch .....

anyone have any suggestions here?

thanks!

richard