Try to isolate the element (possibly a printer font or imported graphic)
that causes the error and recreate or simplify it.
Some RIPs tend to lose memory when days have been running for days or
weeks without being reset or switched on and off. Reset the RIP and try
printing again.
You can free up diskspace (which is used for virtual memory) on older
PostScript level 1 RIPs by performing a fontcache delete. This procedure
gets rid of unnecessary temporary fontfiles that take up valuable harddisk
space. Most level 1 RIPs come with a utility to delete the fontcache,
often it is just a little PostScript file that has to be downloaded to
the RIP. | 
