Hi Guys, 
I updated to the latest galaxy distribution today and I cant seem to edit existing workflows. I've seen others with this error from a Sept 07 distribution (http://dev.list.galaxyproject.org/Can-t-edit-Galaxy-Workflow-ElementInterface-instance-has-no-attribute-render-td4656393.html), but Jeremy Goecks mentioned that this might of been fixed in the Sept 20 distribution. 

Any ideas on how to fix this? 
Thanks, 
Richard