Bug: Prism 7 Windows can crash when you try to draw a zig-zag line

Prism 7 Windows will crash if the default border thickness for drawn objects is set to "none" and you try to draw a zig-zag line. 

To bypass the problem: 
1. Draw any closed object on the graph/layout sheet (f.e. ‘rectangle’).
2. Select the new object and double click on it (or perform ‘Selected Object(s)’ command from the ‘Change’ menu).
3. The Format Object’ dialog appears. Change ‘Thickness’ in the ‘Border’ section to any value except ’None’.
4. Check ‘Set as Default’ option and click ‘OK’.