--- fontforge-20120731-b/fontforge/parsepdf.c.orig	2013-04-15 17:47:51.113706334 +0100

+++ fontforge-20120731-b/fontforge/parsepdf.c	2013-04-15 17:55:55.531682304 +0100

@@ -960,6 +960,8 @@

 	    start = 0;

 	    num = pdf_getinteger(pt,pc);

 	}

+	if ( (pt=PSDictHasEntry(&pc->pdfdict,"DecodeParms"))!=NULL && strstr(pt, "/Predictor")!=NULL)

+return( NULL );

 	if ( (pt=PSDictHasEntry(&pc->pdfdict,"Index"))!=NULL ) {

 	    if ( sscanf(pt,"[%d %d]", &start, &num )!=2 )

 return( NULL );