diff -up blender-2.67b/source/blender/makesrna/intern/rna_access.c.rna blender-2.67b/source/blender/makesrna/intern/rna_access.c

--- blender-2.67b/source/blender/makesrna/intern/rna_access.c.rna	2013-05-16 12:43:18.000000000 +0200

+++ blender-2.67b/source/blender/makesrna/intern/rna_access.c	2013-06-14 16:35:39.263926932 +0200

@@ -1273,13 +1273,15 @@ void RNA_property_enum_items_gettexted(b

 			int totitem = 0;

 			/* count */

-			for (i = 0; (*item)[i].identifier; i++)

-				totitem++;

+			if (*item)

+			  for (i = 0; (*item)[i].identifier; i++)

+			    totitem++;

 			nitem = MEM_callocN(sizeof(EnumPropertyItem) * (totitem + 1), "enum_items_gettexted");

-			for (i = 0; (*item)[i].identifier; i++)

-				nitem[i] = (*item)[i];

+			if (*item)

+			  for (i = 0; (*item)[i].identifier; i++)

+			    nitem[i] = (*item)[i];

 			*free = TRUE;

 		}