The EXS24 can display up to 31 characters, including the file name extension. Longer names will be shortened in the display, and a hexadecimal number is added in order to prevent duplicate names.
While the instrument will still work, you can prevent this by renaming the file or folder in the Finder, making sure not to use more than 31 characters, including the .exs file extension.
This document will be updated as more information becomes available.