@dave r said:

That doesn't answer the question about having installed SketchUp correctly. If you didn't install it correctly you could have issues such as you describe. It also doesn't answer the question about which version of SketchUp you are actually using.

everything is fine. Installed it completely new as administrator. Seems this was the problem.Thought an installation is not possible if you are not logged in as administrator. Apparently I was wrong.

Thank you all for your appreciated help to solve my problem.
Regards
cgArchitekt

@dave r said:

What version of SketchUp are you actually using? Your profile says you are using 2018 Free/Make which does not exist.

If you are using SketchUp 2018 Pro, did you install it correctly by right clicking on the downloaded installer and selecting Run as administrator?

Thanks for your answer.

I installed everything with the Extension Manager inside of the program. And it is shown correctly in the installed plugins. I've got no error message during installation process.

To all dear FreoTools users,

I've a problem with FredoTools or LibFredo (i can't determine exactly what is causing the problem) because in my Sketchup 2018 installation the Fredo tools are not running. I get the Fredotools Icon in the program but when I click on it to select a tool only a window opens with the Javascript that comes with the LibFredo6.
The computer is only equipped with onboard Intel UHD 630 graphics, but the Sketchup 2018 version runs well and stable.

Can any of you out there tell me what the problem is or is it really the Intel UHD 630 graphics?

Thanks in advance for you appreciated help.
Horst
cgArchitekt