I don't think it's lost. If you want to try by yourself, edit the [font=courier new]Home.xml[/font] file in your .sh3d file and remove the XML elements which contains some attributes equal to [font=courier new]NaN[/font] (probably the [font=courier new]<compass ... />[/font] line from your image). Of course, make a backup of your .sh3d file first.
If making this change is too much for you, please [url=mailto:[email protected]]send me[/url] your .sh3d file or the [font=courier new]Home.xml[/font] file it contains.