Hello I think a bug was introduced into galaxy-dist between the 15.03 and 15.05 releases, for the "Share history with user" function. The function works for 15.03 but fails in 15.05. To reproduce: 1. Click on the "cog" icon for a history and select "Share or publish" 2. Under "Share History with Individual Users" click "Share with a user" 3. Enter the email of another user on the system and click submit In 15.03 this returns to the sharing screen and indicates that the history has been shared with the specified user; in 15.05 this produces a stack trace (or "internal server error" in a production setting"). The following patch appears to fix the problem: diff -r c3cef260df88 lib/galaxy/webapps/galaxy/controllers/history.py --- a/lib/galaxy/webapps/galaxy/controllers/history.py Fri May 15 15:20:17 2015 -0400 +++ b/lib/galaxy/webapps/galaxy/controllers/history.py Wed Jun 17 12:51:41 2015 +0100 @@ -899,7 +899,7 @@ for history_id in ids: history_id = self.decode_id( history_id ) history = self.history_manager.get_owned( history_id, trans.user, current_history=trans.history ) - histories.append( ) + histories.append( history ) return histories def _get_users( self, trans, user, emails_or_ids ): also available via this gist: https://gist.github.com/pjbriggs/65c29a87e094d4d257f6 Apologies if this has already been reported/fixed elsewhere, or if there's a better way to submit this fix (if so then please let me know) Best wishes Peter -- Peter Briggs peter.briggs@manchester.ac.uk Bioinformatics Core Facility University of Manchester B.1083 Michael Smith Bldg Tel: (0161) 2751482