NX1 - Problem expanding NX models

Problem
When attempting to expand NX model files, they do not expand and multiple errors are shown.

Solution

PATH environment variable may not have been set up correctly according to your version of NX. Redo step

MagicDraw - Check NX setup according to User Guide, paying particular attention to PATH environment variable setup
Rhapsody - Check NX setup according to User Guide, paying particular attention to Syndeia.hep file setup