Gimp: print fails but print of print preview works

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http://forums.fedoraforum.org – Gimp 2.6.7 on FC 11 64 bit with HP Laserjet 4000T. I can print a photo from Gimp if I use the "print preview" first and then select the print icon on the print preview window. When I don't do the preview and try to print without that step, the printer emits a blank page. Any ideas on diagnosing and fixing this problem? I don't have any problem printing documents from Open Office. (HowTos)