diff -up ghostscript-8.64/Resource/Init/gs_init.ps.runlibfileifexists ghostscript-8.64/Resource/Init/gs_init.ps
--- ghostscript-8.64/Resource/Init/gs_init.ps.runlibfileifexists	2009-01-08 09:17:18.000000000 +0000
+++ ghostscript-8.64/Resource/Init/gs_init.ps	2009-02-04 11:35:19.000000000 +0000
@@ -672,6 +672,14 @@ systemdict /internaldict dup .makeintern
 	   { /undefinedfilename signalerror }
 	  ifelse
 	} bind def
+/runlibfileifexists
+	{		% We don't want to bind 'run' into this procedure,
+			% since run may get redefined.
+	  findlibfile
+	   { exch pop /run .systemvar exec }
+	   { pop }
+	  ifelse
+	} bind def
 /selectdevice
 	{ finddevice setdevice .setdefaultscreen } bind def
 /signalerror		% <object> <errorname> signalerror -
@@ -840,6 +848,7 @@ userdict /.currentresourcefile //null pu
 	} bind def
 % Temporarily substitute it for the real runlibfile.
 /.runlibfile /runlibfile load def
+/.runlibfileifexists /runlibfileifexists load def
 /runlibfile /runlibfile0 load def
 
 % Create the error handling machinery.