I am the user that Sam Rose contacted you about.
I updated to the latest version of J Shortcodes and there is still two problems I see. Since I am no longer a programmer, I will try to to give you a short description of the problems.
With the previous version of J Shortcodes at the Dashboard many of the sections (Recent Drafts, Plugins,etc) were showing "loading" and just sat there. With the latest version of J Shortcodes - the Dashboard (all sections) would load but very slowly. I deactivated and the Dashboard loaded properly.
That was the first problem. The second problem (which was in both your previous version and the latest one) - in the New Posts (and also the Edit Posts) - the buttons for the Visual and HTML - you cannot switch between the two. I did not try and create a new post using whatever one was available (Visual versus HTML). Once the J Shortcodes was deactivated - the buttons (Visual, HTML) and the rest work perfectly.
I don't know whether it is just my system or if anyone else has the same problem but I did want you to be aware.