I was entertaining a foolish thought of gathering general experiences here first. – Even my older thread (also in the Help section) did not receive any attention.
When doing a clean install with 1.5.8 or 1.5.11, the Linux debian package installed program won’t let me in. I can hear the YouTube video from the Surfing plugin going on but the progress bar with Workspace Loading is not going away. I tried other workspace.json files and even deleting it.
I mainly wrote this up for others who might experience this and want to work on their files.