John, thanks for following up. I myself abashedly sent out a followup mail which maybe didn't get to this list (from the other galaxy-user@lists.bx.pu.edu list). Yes indeed, I'd closed my one-liner options tag. Problem fixed now. Regards, Damion ---------------------------------------- From: "John Chilton" <chilton@msi.umn.edu> Sent: 01 November 2013 09:48 To: Cc: "Galaxy Dev" <galaxy-dev@bx.psu.edu>, damion@learningpoint.ca Subject: Re: [galaxy-dev] Tool XML form building bug with <options from_data_table="..."> ? Hey Damion, Because this wasn't explicitly shown in your example e-mail, can you verify for me that you are putting the filter elements inside of the options element and not inside of the param element? -John