diff --git a/src/diana/sgfParser/property.py b/src/diana/sgfParser/property.py
--- a/src/diana/sgfParser/property.py
+++ b/src/diana/sgfParser/property.py
@@ -1,4 +1,5 @@
 import re
+import logging as log
 
 from .propValues import choose, singleton, listOf, compose, number, real, double, color, text, empty, anything, point, move, stone
 from . import skipWhitespace, ParserError
@@ -24,7 +25,12 @@ class Property:
 		res=Property()
 		i,res.name=Property.ident(s,start)
 		i=skipWhitespace(s,i)
-		i,x=Property.createValue(s,i,res.name)
+		try:
+			i,x=Property.createValue(s,i,res.name)
+		except ParserError as e: # malformed value
+			log.warning(e)
+			i,x=choose(listOf(anything), singleton(anything))(s,i)
+			res.name="_"+res.name
 		res.value=x
 		i=skipWhitespace(s,i)
 		return (i,res)