Known filenames:
mystcraft-1.7.10-0.11.13.00.jar
MystCraft.jar
MYSTCRAFT-1.7.10-0.11.13.00.jar
mystcraft-1.7.10-0.11.13.00 (1).jar
mystcraft.jar
Mystcraft.jar
WG-mystcraft-1.7.10-0.11.13.00.jar
Mystcraft 0.11.13.00.jar
mystcraft-1.7.10-0.11.13.00 (7).jar
mystcraft-1.7.10-0.11.13.00 (2).jar