Unknown exceptions thrown when adding primitives

[tntmeijs]

Describe the bug
When the Visual Studio debugger is attached to Maya with the plug-in loaded, exceptions are logged to the debug output window when adding primitives.

To Reproduce
Steps to reproduce the behavior:
0. Attach the Visual Studio debugger

1. Go to "Windows ==> General Editors ==> Plug-in Manager"
2. Click on "WispForMaya"
3. Switch to the Wisp viewport
4. Add primitive
5. See Visual Studio output

Expected behavior
No exceptions.

Screenshots

System (please complete the following information):

• OS: Windows 10
• Maya 2019
• Maya version / update 2019.1
• Graphics card GTX970m
• RAM 16GB DDR4-2666
• CPU Intel Core i7-6700HQ
• Screen resolution 1920x1080

Additional context
NO.