Hi Mike,
"""""""""""""""""The Ext Scripts come up OK with scripts that I already had installed but I can't get the list to update to show new scripts """"""""""""""

So this is the case for me too. I thinks it's a permissions issue. If I run MoI as admin then the newly added things will appear. This UI is doing some filesystem stuff, so regular dragging and dropping of the files/folders between betas now will most likely create these issues.

I'll take a slow look at the various permissions (have to go back and track down the Ui's workflow) Then see if I can suggest the rights assignment to the file that's is causing the issue.

Burr