Since upgrading my iMac to Lion, I have been having trouble printing from within PSE 9.0. I have tried re-installing PSE and the problem is not fixed. Both my Epson Stylus Photo R1800 and my HP PSC-1600 exhibit similar behaviour. On the Epson, the paper feeds and the print heads move as if printing, but nothing shows up on the paper. Printer works fine with other apps. On the HP, the printer feeds a sheet of paper, but nothing is printed on it. Any suggestions would be appreciated.