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.
I did some research and bug-hunting via elimination and found that apparently, a change was uploaded to Customizer between Apr 11 and May 19. Before this change, Customizer would ignore unicode characters (° ä ö ü etc.) in comments. Now such characters, even when they appear just in the comments, cause the code to fail.