I am trying to figure out why my HP 1220c DeskJet crashes (immediately closes) ADT 3.3 when I "plot to file". Works fine when printing to paper. I used an older HP1120c for years 'till it became unreliable. Using USB001 port, I have reset "bidirectional communication with printer" both ways, downloaded latest drivers from HP. Win2000 sp4, ATI 9600 video card. Any advice welcome. . . .