As noted in your other forum post, there are a few work around I’ve linked to below to help out until this is resolved.
On a Mac running SketchUp Pro 2017
Click OK once you see the error, and then right click in the Generate Report window, and select Inspect Element. This loads the developer tools. After the developer tools appear at the bottom of the window, follow the 3 steps in this picture: https://www.screencast.com/t/TcFdUquLi
On a PC running SketchUp Pro 2017:
I got the “Older Version” warning. You simply have to type Control-L and then in the Open panel, type the location: https://3dwarehouse.sketchup.com/generatereport_v2.html
Hit Enter, and it should work.