It was tough but I found the problem!
You created your home on a computer with multiple screen, right?
And you arranged the screens to be on top of each other (not side by side)?
I guessed this because the saved ordinates (y) of the photo and video dialogs are negative. Then you can't see them anymore because they are out of reach under the second computer which must have a different screen configuration.
Reopen these dialogs on the first computer, move them on the main screen, save the file and transfer it again on the second computer. If needed, I can send your file with updated coordinates.
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Emmanuel Puybaret, Sweet Home 3D creator
