I'm re-releasing Mystery Foes v2.5 as part of the first Fan Mission pack. This is primarily to keep the mission up to date with the Addon, due to changes I had to make for Would You Kindly. Here are the links:
https://www.dropbox.com/s/n67r1yzyob...kv1.0.rar?dl=0
https://mega.nz/file/CsdFkIIS#guFNzf...HpBEStOOoSOw_o
Be sure to read the ReadMe for those who installed Addon v0.12 first.
It will be a while still before v2.6 of Mystery Foes is ready, so until then, the Fan Mission pack is a temporary fix to the compatibility issues. Sorry for the inconvenience.