@Darryl Gregorash
It is still unstable, so you have to expect that some of the time it will be broken...
in the 15.3 Main Repository, version 0.18.4. Is there something wrong with that version that you cannot use it?
Thanks for your notice. Yes, everyone in the FreeCAD community knows the differences between the provided FreeCAD STABLE and the DEVELOPMENT versions. But that has not been my question. For explanation: In reality the DEVELOPMENT version of FreeCAD is not "pre-alpha" quality as with other programs. The categorization 'unstable' is done by openSUSE. STABLE FreeCAD version have a certain lack of features, because the are not continously developed. So your proposal could NOT be part of the solution. The essential questions are (as above posed): 1) What could be interfering with program execution? 2) Is there a debugger that I could run for a test to get clear which program section makes the segmentation fault? The curiosity in behaviour is that program starts normal, icons are grayed out and if you open a file the hourglass is turning... Regards M