IsoDraw 7.2 Foundation, Windows 7, selected object not viewable on move

Is there anything that controls the visibility of a selected item in IsoDraw...in any of the preferences?

One of our users has an issue that once an item is selected in IsoDraw and he goes to move that object (can be text, graphical, etc), the object becomes invisible and he cant see the movement of the object. It only becomes visible again when he lets go of the mouse.

IsoDraw has been reloaded to see if it was an install issue and the problem remains. Out of the 8 users, only one has this issue.

STUMPED!