I've read many other posts on this, so I'm pretty sure no one is going to know the answer, but - Does anybody have any idea what controls whether or not the Plot Stamp is enabled? Besides the obvious like making sure it's on, is in a printable area, is not read-only, etc. It still works fine on our laser printer, but stopped working on our large roll-feed (Hewlet Packard Design Jet 500PS). So I know the .pss file can't be corrupt, right? Hint: had to reinstall the driver for this plotter because it was causing the plotter to print in greyscale even though ALL appropriate settings were indicating no greyscale (pen settings, driver settings, etc.) -Is the plotstamp controlled by the driver? Could this be the 3rd time in 4 days that I'll have to reinstall that stupid thing?