diff -r 20c41a7e2173 -r 83b28fc0d731 web/ldt/text/models.py
--- a/web/ldt/text/models.py	Fri Nov 19 18:14:02 2010 +0100
+++ b/web/ldt/text/models.py	Mon Dec 13 23:55:19 2010 +0100
@@ -36,8 +36,8 @@
         
         def fset(self, value):
             values = None
-            if type(value) == type([]):
-                values = value
+            if isinstance(value, (list,tuple)):
+                values = list(value)
             elif value is not None:
                 values = [v.lower().strip() for v in unicode(value).split(",")]