Note that the Stories plugin was designed for Stroll. Saq didn't seem
too keen on people using it outside of Stroll, or giving support to
people who do so.
The issue may be that you have only part of the
Stories plugin installed, or there is some other dependency between
Stories and some other Stroll element.
I just downloaded an empty Stroll file, which uses Stories, and added 2click2edit, put tiddlers in both columns, and doubleclicked to edit. I had no trouble opening edit view in either tiddler.