We are having the same problem.

Today the exact sequence was that the doc hit the order button from within a patient's chart. The order window comes up and he fills in the fields from top to bottom (per instructions from the AC tech support). Then he hits Print order (because any other button causes a crash). After printing he hit save without sending and . . . the program crashed.

Usually he simply hits the x in the upper right to close the order window, which generally works without crashing.
This happened with v5 when the LE1700 tablet he uses was running Vista Pro and it's still happening now that we've upgraded to Windows 7.