F 15 Prints F 18 does not. Please Help! lots of data.

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http://forums.fedoraforum.org – I can dual boot back and forth F 15 or F 18. I can't see any difference in the print setup for F 15 and F 18. The printer responds the same with both systems up until the actual print action. F 18 shows no indication of a problem. I don't print alot but do use the printer a few time a week. In the past Selinux has been a problem but does not look that way to me now. No Selinux messages. I will try any and all suggestions. I have used Fedora since FC2 and printers are a common problem for me. This the most baffling for me. I have run the printer Trouble shooting and it says there is no obvious (HowTos)