I have the problem with a Fedora 9 Calculating is good but when tempting to genarate a graph with plot, IDL segfault For more raffinited design, I have the error message following : idl: brw_program.c:142: brwInitFragProgFuncs: Assertion `functions->ProgramStringNotify == _tnl_program_string' failed There is no problem with the same data and program on a Fedora 8 (same IDL version) IDL version : 7.0.1 Has someone already meet this problem ? And solved it ?