How do you get rid of all the box's

[bando]

Had the same problem. Apparently one cannot select them for some reason. A workaround is to create another one and then (one by one) you can delete them by selecting left , than right click and choose delete.
Bottomline, if you cannot select them, create a new one and the old ones will be selectable.
Must be a minor bug or so.

[Ivan Fooker]

Thx for that hint....indeed annoying...
I deleted the corresponding lines in the confUser.ini that did the trick also.