Lines not visible, views move erratically

I have downloaded the latest version Draftsight V1R1.3 on my Windows 7 32 bit machine. I can edit the drawing (see attached) for a while but when I try to move a couple of views they seem to move exponentially to the mouse movement. Very strange. After I notice this effect, I then try to draw some simple lines but after I finish the command they do not appear on the screen. Editing of the file becomes impossible.I have uninstalled and reinstalled this software with the same results. I gave up fighting with it and started to REDRAW from scratch but then near the completion of this new drawing it started to behave erratically again.

There is another machine here (64 bit) with the same software and it behaves the same. I cannot use this software anymore unless this is resolved. Looking for help asap or other software alternative. Thanks!

Older version of Draftsight was working fine. How can I find to download the older version?! Am using SW2012 on same machine.

Need your help! Thanks!

Ed