I have been using Draftsight on one of my computers with no issues.  I had a problem with that computer so I downloaded it on a backup computer.  It works fine with one exception.  If I draw a line and want to dimension it, it will not snap cleanly to the endpoints of the line.  On the original computer, if I bring the mouse close to the endpoint, it will snap right to it.  On the new install, it will appear to snap to the endpoint but if I zoom in the dimension point is off the line by several fractions of an inch.  I have tried several things to try to correct it (esnap, snap) but clearly I am missing the cause of this.  Can anyone point me in the right direction?  Thank you!