--- texlive.cygclass.orig	2012-11-21 00:02:08.000000000 -0500
+++ texlive.cygclass	2012-12-23 17:14:42.042923600 -0500
@@ -203,6 +203,7 @@
 		done
 
 		for fmt in $(grep -E 'execute AddFormat' $tlpobj \
+		             | grep -v 'mode=disabled' \
 		             | sed 's/.* name=\([^ ]*\).*/\1/g')
 		do
 			__config_set texlive_fmts "$(__config_get texlive_fmts) $fmt"