On Tue, Jan 17, 2012 at 01:40:51AM -0500, P Mohan wrote: > /usr/lib/postgresql/9.1/lib/postgis-2.0.so: undefined symbol: > json_tokener_errors ... > installed json-c from source from github As root, run: # ldconfig --strk; () Free GIS & Flash consultant/developer /\ http://strk.keybit.net/services.html