Per Violet at the JCF:
MLLE v2.17 has been released and mostly just refines things. If you are updating from a previous release, besides the .exe and the .pdb, there are two new files to extract into your MLLE folder, “MLLE Event Sprites – Jazz.png” and “MLLE Event Sprites – Battery Check.png.”
MLLE is Violet’s level editor for Jazz Jackrabbit 2, which adds tons of new features that the official level editor, JCS, does not support. Click the links in this newspost for more information!