diff -r 5e24a2d7078f roundup/cgi/templating.py
--- a/roundup/cgi/templating.py	Wed Mar 05 14:37:37 2014 +0300
+++ b/roundup/cgi/templating.py	Thu Mar 06 14:54:10 2014 -0500
@@ -1903,7 +1903,7 @@
         return self.input(name=self._formname, value=value, size=size,
                           **kwargs)
 
-class LinkHTMLProperty(HTMLProperty):
+class LinkHTMLProperty(HTMLProperty, object):
     """ Link HTMLProperty
         Include the above as well as being able to access the class
         information. Stringifying the object itself results in the value