First of all amazing campaign! Even though I had to google that encryption coordinate. (I have no clue what an index or mod10 is)
I've got an error triggering at the start of the Uncle Kostas mission.
With no other mods running, and file integrity verified, The error
"Picture
\a3\missions_f_epb\video\b_hub01_few_hours_later.ogv
not found"
comes up at the start of the mission. I would assume that the error is somehow related to the APEX update, nevertheless the mission isn't progressing and is instead stuck on a neverending black screen.