Startup Suite Loading
Sorry for the problem, this is an AutoCAD issue.
Sometimes the AutoCAD autoloader does not load the program for reasons unknown.
Autodesk suggests resetting or doing a repair on AutoCAD.
If this does not work in your situation we have a work around.
Using the Appload command “Startup” Suite Option to load the .VLX files.
Command: APPLOAD <Enter>
This displays the Load/Unload Applications dialog as shown below: