Many thanks for having a look! I get now a proper error dialog.
Nevertheless I see there a crash:
- take the testfile from initial post
- select the knot left to the one that triggered the C++ exception
- decrease its multiplicity
result: sometimes, but not always, it crashes either immediately or after about a second. Here is such a case:
- screencast of crash
- nDvhWy5CXT.gif (588.71 KiB) Viewed 1354 times
In case you don't get a crash yet:
Method A:
- use the undo toolbar button
- select the next knot left to it
- decrease its multiplicity
Result: I get now in all cases an immediate crash
Method B:
- close the Sketch task dialog
- try to close FC by clicking the x button of its main window
result: it freezes and after a while Windows steps in reporting FC is not responding
Do you get this too?
OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.22891 (Git)
Build type: Release
Branch: master
Hash: 0a42189173b9d50a2849d9b2aa79c110a7565c89
Python version: 3.6.8
Qt version: 5.12.6
Coin version: 4.0.0a
OCC version: 7.4.0.beta
Locale: German/Germany (de_DE)