Does the command
sudo ln -s /usr/lib/cups/filter/gstoraster /usr/lib/cups/filter/pstoraster
entered in a terminal window solve your problem (see http://www.fedoraforum.org/forum/showthread.php?p=1485349)?
Can you try an Oneiric live CD? Does the problem still persist on that system?
Does the command
sudo ln -s /usr/lib/ cups/filter/ gstoraster /usr/lib/ cups/filter/ pstoraster
entered in a terminal window solve your problem (see http:// www.fedoraforum .org/forum/ showthread. php?p=1485349)?
Can you try an Oneiric live CD? Does the problem still persist on that system?