Dave, I use SketchUp 2018 Pro version. It has to be compatible with FredoCorner, at least the notation to the plugin says that.

It's a great plagin indeed, I used it for a short period of time. But now I can't get it work at all ((( I installed the latest versions of both LibFredo6 and FredoCorner plugins. The FredoCorner toolbar shows up but when I try to click on it nothing happens ((( I reinstalled SU and plugins, but still the problem is there (( Please, help me make it work!!! Thank you in advance for all your help and guidance!