I am currently having a huge problem printing from indesign. I am running CS3 on a hi spec 08 Mac Pro (10.5.2) connected to an Epson 3800 Stylus Pro A2 printer. I keep getting the message <Printing Error: The Adobe Print Engine has failed to output your data due to an unknown problem>. I have tried trashing the indesign preferences, I tried a new account... In fact I have just done a clean install of the entire OS. Just can't get it to print. I did have it printing on this machine before and the same document prints from my iMac. The problem seems to be something to do with the print dialogue. If I print WITHOUT checking the Printer settings in the Print dialogue is sends to the print, but the output is shocking as the paper selection is not right and uses photo black not matt black. When I DO check the printer settings and set it all correctly it gives me the <Printing Error: The Adobe Print Engine has failed to output your data due to an unknown problem>. Anyone else had this or have any thoughts?