Hi, I compiled ghemical-1.01 with MPQC on a redhat 9.0 machine It seems to run fine except for a few pbs: - When I generate an ESP plane, I only see the blue axes and nothing else. Changing the lights doesn't bring it up (I have a black backgroud...). No fancy pictures like in the user manual! - The mpqc code is recognized since I see the options, but an energy calculation or a geometry optimization always gives "nan" numbers. Any hints? Thanks Nicolas Saettel