When you run the "Find TWiki Extensions" in configure you get a list of all plugins from twiki.org.
First column is shown as links in the browser. When you click on the link the browser suggests to download a Fast Report file. And when you open this file the content is totally useless to the user or admin.
The link should lead to the plugin topic I would assume. And it would probably be a good idea if this link opened in a new browser window to avoid leaving configure.
This is very confusing and therefore marked urgent.
Well spotted. This is a result of the changes to support multiple repositories. Fixed.