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Did you ever get Gimp 2.10 running? Since you have already installed Gimp several times it might be best to start again from scratch. The Windows registry entries for the install might be the problem
1. Use the Windows uninstall menu and uninstall Gimp 2.10.6
2. Check that all of the C:\Program Files\GIMP 2\ folder is gone. If still there delete it.
3. Follow this procedure for the installation.
direct link https://youtu.be/wFB-Jn2pmH0 duration 2 minutes
Did you ever get Gimp 2.10 running? Since you have already installed Gimp several times it might be best to start again from scratch. The Windows registry entries for the install might be the problem
1. Use the Windows uninstall menu and uninstall Gimp 2.10.6
2. Check that all of the C:\Program Files\GIMP 2\ folder is gone. If still there delete it.
3. Follow this procedure for the installation.
direct link https://youtu.be/wFB-Jn2pmH0 duration 2 minutes