Thanks for the answer
I’m pretty sure I’ve downloaded and installed the correct version, Sketchup Make.
SU Version 17.03.116
This version with OS High Sierra version 10.13.2. not fully compatible, I have not noticed until then. For a while it seemed to work well and the program immediately opened on the first double-click on the icon.
I’m afraid to plan bigger projects if the program gets off completely.
What can I do ? Is there perhaps another make version to download?
When I uninstall the program and then reinstall it, the splash screen will always show that the trial period for the Pro version is already over, but I can continue working with the make version if I agree …