Hans,
It should work on 5.1.11, at the moment it is the GenTags plugin (available
here) and the templates. What are you doing to move it to a 5.1.11 wiki?
Iain,
Yes, I am working on twederation things at the moment. To change what appears when you open the wiki you would list what you want to be open in the DefaultTiddlers field of the getting started tiddler. So you would put something like
[[Welcome]]
[[Add/Edit Encyclopedia Entry]]
in the field to have the existing add/edit tool open when you open the wiki. That all that I have made so far is the add/edit tool so you would have to create the others and list them there.
While I am probably not going to spend much time working on this any time soon please feel free to add whatever you want and if you have questions I may not be able to give perfect answers but I will be checking the group regularly.