I finally got py25-matplotlib installed. Like an earlier poster though I get a segfault with the TkAgg backend. Running under gdb gives me the barest of information though since nothing appears to be built with debug symbols enabled: #0 0x01f0bf40 in TclpFree () #1 0x01f0807e in ResetObjResult () #2 0x01fc08c6 in Tk_MainWindow () #3 0x01e832e0 in PyAggImagePhoto () #4 0x01eb5aeb in TclInvokeStringCommand () #5 0x0a010518 in TclEvalObjvInternal () #6 0x0a0108fb in Tcl_EvalObjv () #7 0x01aed848 in Tkapp_Call () #8 0x00234e5f in PyEval_EvalFrameEx () #9 0x00236baa in PyEval_EvalCodeEx () #10 0x002349c3 in PyEval_EvalFrameEx () #11 0x00236baa in PyEval_EvalCodeEx () #12 0x002349c3 in PyEval_EvalFrameEx () #13 0x00236baa in PyEval_EvalCodeEx () #14 0x001c41ea in function_call () #15 0x0019f922 in PyObject_Call () #16 0x00233021 in PyEval_EvalFrameEx () #17 0x00236baa in PyEval_EvalCodeEx () #18 0x001c41ea in function_call () #19 0x0019f922 in PyObject_Call () #20 0x001a8676 in instancemethod_call () #21 0x0019f922 in PyObject_Call () #22 0x0022e196 in PyEval_CallObjectWithKeywords () #23 0x01aebd4c in PythonCmd () #24 0x0a00d7cf in TclInvokeStringCommand () #25 0x0a010518 in TclEvalObjvInternal () #26 0x0a05839c in TclExecuteByteCode () #27 0x0a061088 in Tcl_ExprObj () #28 0x0a010de5 in Tcl_ExprBooleanObj () #29 0x0a01beb5 in Tcl_IfObjCmd () #30 0x0a010518 in TclEvalObjvInternal () #31 0x0a011645 in TclEvalEx () #32 0x0a011f3e in Tcl_EvalEx () #33 0x0b007f01 in Tk_BindEvent () #34 0x0b00de59 in TkBindEventProc () #35 0x0b0162fa in Tk_HandleEvent () #36 0x0b033c3a in TkDoConfigureNotify () #37 0x0b033da9 in Tk_MakeWindowExist () #38 0x0b033ee8 in Tk_MapWindow () #39 0x0b02a4b2 in ArrangePacking () #40 0x0a0ac658 in TclServiceIdle () #41 0x0a08e2ea in Tcl_DoOneEvent () #42 0x01aeb4f6 in Tkapp_MainLoop () #43 0x00234e5f in PyEval_EvalFrameEx () #44 0x00236baa in PyEval_EvalCodeEx () #45 0x002349c3 in PyEval_EvalFrameEx () #46 0x00236baa in PyEval_EvalCodeEx () #47 0x002349c3 in PyEval_EvalFrameEx () #48 0x00236baa in PyEval_EvalCodeEx () #49 0x00236cb7 in PyEval_EvalCode () #50 0x0025a8e4 in PyRun_InteractiveOneFlags () #51 0x0025ab23 in PyRun_InteractiveLoopFlags () #52 0x0025b329 in PyRun_AnyFileExFlags () #53 0x00269848 in Py_Main () #54 0x00001f7c in _start () #55 0x00001ea9 in start () Is this enough for someone to debug with? If not, how do I go about installing debug versions of the various packages? Is another interactive backend supported for matplotlib? Thx, -- Skip Montanaro - skip@pobox.com - http://www.webfast.com/~skip/