We have Windows 2000 SP3 installed with Autocad 2000i Sp2 with P4 front side bus of 400mhz, 3.0 gig, with 1.0gig of memory. 80gig harddrive space too... Some drawings no matter what format Xref to a simple layout, we get an Internal error EREGEN 9 2 or EREGEN 9 2 2 or 9 1 9 when plotting. It sometimes prints(missing objects or entities) and sometimes it shuts autocad....It doesn't happen on all drawings. Any info or help would be greatly appreciated. note: We have done recoveries with DDinsert,wblock, also an audit...But it still happens... We have also an HP DeskJet 1120C but it gives this error on any printer we have Canon G2, Hp 4000Tn, Lexmark 640T etc.