--- acl.py.orig	2014-06-03 14:13:24.576000000 +0200
+++ acl.py	2014-06-04 12:34:22.112000000 +0200
@@ -163,7 +163,10 @@
 		if data:
 			elements = data.split( ',' )
 			for elem in elements:
-				if elem.find( '=' ) != -1:
+				if not elem:
+					ACL.error('### Typo in data: %s Ignoring ,, and try to continue' % (data))
+					continue
+				elif elem.find( '=' ) != -1:
 					key, value = elem.split( '=' )
 					options[ key.strip() ] = value.strip()
 				elif elem[ 0 ] == '!': # key without value allowed if starting with ! -> key may not exist
@@ -244,7 +247,7 @@
 		if flavor1 == flavor2 or flavor1 is None or flavor1 == '*':
 			return ACLs.MATCH_FULL
 
-		if flavor1[ -1 ] == '*' and flavor2.startswith( flavor1[ : -1 ] ):
+		if flavor1[ -1 ] == '*' and flavor2 and flavor2.startswith( flavor1[ : -1 ] ):
 			return ACLs.MATCH_PART
 
 		return ACLs.MATCH_NONE