Hi. I've just changed my PC, I changed from a windows 7 laptop 32 bit to a windows 7 desktop 64 bit. I downloaded draftsight OK but when I open files created on the previous computer, none of the curves are displayed. The straight lines are OK but not the curves. When I try to re draw them, ie a circle, the function works OK but it still will not display. Also, the mouse action is jerky, there seems to be a small delay as you track it. Its not crisp as it was on my previous PC.  The mouse action is good off the drawing area, but not inside the drawing frame.

Any ideas?