I've been having some trouble with compiling matplotlib on Snow Leopard. I managed to get rid of all my old problems by recompiling everything with gcc-4.2.

But now when I import matplotlib.pyplot I get an Abort trap message and python quits. Here is part of the error message I get:

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   libSystem.B.dylib                 0x00007fff84a893d6 __kill + 10
1   libSystem.B.dylib                 0x00007fff84b29972 abort + 83
2   libgcc_s.1.dylib                  0x0000000100487d51 uw_init_context_1 + 385
3   libgcc_s.1.dylib                  0x00000001004884cc _Unwind_Resume + 76
4   ft2font.so                        0x00000001017b046d FT2Font::FT2Font(std::string) + 4269 (Extensions.hxx:629)
5   ft2font.so                        0x00000001017b0af8 ft2font_module::new_ft2font(Py::Tuple const&) + 408 (ft2font.cpp:1728)
6   ft2font.so                        0x00000001017b3d52 Py::ExtensionModule<ft2font_module>::invoke_method_varargs(std::string const&, Py::Tuple const&) + 162 (Extensions.hxx:422)
7   ft2font.so                        0x00000001017c25a0 method_varargs_call_handler + 512

It seems like freetype is the problem and from a little googling I see that the sage developers also had a problem with this. Does anyone know how to fix this?