MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Looks like your Sketchup set-up is taking mm as inches (1561/25.4 = 61.46 which is about what it should be). Unfortunately, I cannot help on how to fix that, I guess it should be easy to find the answer with a search on the internet.
Hope it helps, cheers