Importing 'folder' that doesn't exist on site causes NullPointerException about google-sites-liberation HOT 4 OPEN

When this exception is thrown, nothing happens. The app doesn't indicate that 
an error 
occurred; it doesn't exit; it doesn't continue to the next file - it just sits 
there, with a 
progress bar not progressing.

Nope. Even when I'm only re-importing exactly the same content I just exported, 
I get 
the same NullPointerException, and the importer just sits there doing nothing.

In short, every time I try to import, I get a NullPointerException at some 
point. Just now, 
it happened to be before a single file was uploaded. Usually it's part-way 
through the 
import, but I've never been able to import anything without this happening at 
some 
point.