line type THICK_CENTER causes Creo Schematics to lock up and crash

When we set a fiber (in block diagram) to THICK_CENTER and then move a block that it is attached to, i get the preview of the change in the fiber, but as soon as i let go..  it locks up and crashes.  Before I place a call is anyone else having this issue?   DONT TRY THIS ON A WORKING DESIGN!!!

Start something new and be ready to kill the process thru task manager.  Using the latest 4.0 M010