Model Graphics disapear While Rotating

Has anyone experienced your model graphics disapearing either in part mode

or assembly mode?  I can get certain programed views (i.e. front, left, top, bottom)

to show the model, but as soon as I start to rotate the model it disapears.

I select a certain view again and it reapears.  Rotate again and is disapears.

Has anyone experienced this and found a solution?

SolidworksApi macros