hi,i installed XEROX_Phaser_3100MFP drivers but when i test print from cups this error ocuurs:  stopped 
"Filter failed"

my /usr/lib/cups/filter :

InstructionPage  imagetopdf     pstops           rastertoprinterbin
bannertopdf      imagetops      rastertodymo     rastertopwg
commandtoescpx   imagetoraster  rastertoepson    sys5ippprinter
commandtopclx    pdftoijs       rastertoescpx    textonly
commandtops      pdftoopvp      rastertohp       texttopdf
foomatic-rip     pdftopdf       rastertolabel    texttops
gstopxl          pdftops        rastertopclx     urftopdf
gstoraster       pdftoraster    rastertopdf      watermarkfilter
gziptoany        pstopdf        rastertoprinter

these are my filters

how can i solve ?