I am using LR CC on Win 7 with a 7900. Suddenly print jobs from LR are just plain vanishing. The program behaves normally when I click Print - i.e., the Epson dialog box (with ink levels) pops up and the horizontal bar indicates printing progress. Then, nothing. The print queue is empty. I can print a nozzle check from the computer. Reboots etc. have not helped. I can print from Photoshop. Yikes!