problem with printing - could not print because not enough RAM CS5

I am using Photoshop CS5 on a new iMac running OSX 10.9.4.  Each time I try to print from Photoshop I get a message saying 'Could not print because there is not enough RAM'. There is plenty of RAM, and the message appears even if I try to print an image a mere 100KB!  With my previous iMac I could print without any problems. Any ideas how to put this right? Thanks