We have had a few instances of where AvCAM simulates just fine on one computer, but not on another. The files load just fine, the cutouts display properly, but the simulated end mill movement does not appear. When the simulate button is pressed, the mouse cursor goes to a + and when complete goes back to a pointer.
This is frequently coincident with loading a new version. We do not know specifically what is causing this, since in most instances we have not changed the way AvCAM writes to the screen. In every instance however we have found that the user has a Logitech mouse that when installed, a bunch of extra software possibly game related was loaded to the computer.
When uninstalling the mouse continues to work fine, and AvCAM simulates again.