I have messed up! :-((
Just testing I changed my desktop settings and NOT for the better. Now when I right click on the desktop a instead of Desktop settings, I get as small menu of applications pops up. It has only part of the programs in the applications menu on bottom left. When I select System from that menu, then I select Desktop settings, but when I click on it I get an error.
The top title is Openbox and in box it says:
Failed to execute child process “lxsession-default” (no such file or directory)
How do I get it back to the default desktop for Lununtu new install???
Do I have to reinstall Lubuntu???