Today, in AutoCAD 2000, we finished a new "B" size drawing (Tabloid 11 x 17) and clicked the Plot icon. All settings were as is normal for us, clicked OK. Plot Progress window came up as usual. Then the AutoCAD Error Aborting window popped up and said "FATAL ERROR: Unhandled c0000090h Exception at 3398cb55h". To check it out we started trying to Plot some of our proven "B" sized drawings. All the results were the same "FATAL ERROR...". Then we tried plotting some of our proven "A" drawings (Letter 8-1/2 x 11) - each successfully plotted. Then we changed the "B's" to "A's" of some of our proven "B's", each plotted successfully scaled down to "A's" on 8-1/2 x 11 paper. This just started today. Until now all of our plots, regardless of size, plotted properly. Nobody recalls making any changes in our system recently, nor have any unplanned changes been noticed in our system recently. Our system is a Dell 333, running Windows 98 SE and coupled to an HP DeskJet 1120C. What do you spose we have done to cause this situ? All ideas, comments, guesses, and questions will be greatly appreciated. Thanks, K.