I am running Windows XP and just upgraded to Autocad LT 04 from LT02. My 2 plotters are acting exactly the same way with very light plots. In fact on the HP1220c there are missing lines in the cutting bill of my detail sheets. On the HP650c generally my plot styles are not replicated as they were with 2002 LT. I have reset my plot styles to mimic the ones I used in 02 , I have tried plotting with dithering on, and dithering off both plots give me exactly the same plot I am using greyscale on the 1220c and Monochrome on the 650c, exactly the same as before. I hope someone can come up with an answer for me. I have to believe it is something simple , a setting or something to make me look stupid.