Comment 4 for bug 678973

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It seems PPC binary is universally affected even with rosette on intel machine. Priority heightened as this is critical and also affects stitching.

The cause is most likely inside the wxMac code. 2 tasks needs be done:
- Work around; as the ExternalCmd dialogs have Timer running anyway, should be able too check if the process has stopped every second or so.
- Report to wxWidgets bug tracker; quote this tracker item. In src/hugin1/base_wx/MyExternalCmdExecDialog.cpp, probably EVT_END_PROCESS event is not properly dispatched on PPC.