Everything's all messed up
I somehow messed up the main-viewport, I tried to fix it by making it undockable, and it looked all messed up so I closed it and it's all messed up. Even though I got it docked up I have three viewport windows that I cannot reset to normal? Isn't there some kind of BIG RESET BUTTON?
Edited for profanity
Post edited by Richard Haseltine on

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I'm no sure what you mean by 3 viewport wndows, but suspect you may have it split into several sub-views - Window>Viewports>Single View will restore that without afecting anything else.
Window>Workspace>Select layout is the way to go back to the original state completely.
Making a pane undockable stops it from being docked, so I suspect that was the opposite of what you wanted.
Richard Haseltine,
I got it close to normal: I have the single image back like before, but I cannot see the Install/Products window at the same time as the viewport window.
BTW: I actually attempted to delete the software and re-download (everything was exactly as it was before --
Mod Edit to remove profanity
Uninstalling/deleting won't remove settings (which thelayout is). Reloading the Workspace (Window>Workspace>Select Layout) will restore the opening state, or allow you to use one of the other settings, and if then customise it you can save your workspace as a hedge against future rearrangements.