diff -r 3638463d6e02 -r 3f3d97be9a9f dialogs/PouTransitionDialog.py
--- a/dialogs/PouTransitionDialog.py	Wed Dec 28 16:33:50 2016 +0300
+++ b/dialogs/PouTransitionDialog.py	Wed Dec 28 17:10:04 2016 +0300
@@ -32,7 +32,12 @@
 
 def GetTransitionLanguages():
     _ = lambda x : x
-    return [_("IL"), _("ST"), _("LD"), _("FBD")]
+    #
+    # IL language is temporary disabled because
+    # matiec freezes if transition is written in IL
+    #
+    # return [_("IL"), _("ST"), _("LD"), _("FBD")]
+    return [ _("ST"), _("LD"), _("FBD")]
 TRANSITION_LANGUAGES_DICT = dict([(_(language), language) for language in GetTransitionLanguages()])
 
 class PouTransitionDialog(wx.Dialog):