Thank you Rich and Tig

After reading the installation instructions, I somehow convinced myself this was a stand alone program that ran outside SketchUp and not just an extension.

It installed fine with your instructions …

Thank you

Doug

I recently purchased a license for the Curviloft extension and am attempting to activate it.
I am using Windows 10 and Sketchup 2017
Successfully installed and used the 30 day trail version.
Following the install instructions, downloaded SketchUcationTools_v4.3.0 and attempted to install it.
When I try to open the file it opens Sketchup 2017 and says “file not a model" and closes.
I must be missing something simple?
Any suggestion to get me on the right path?

Thank you … Doug