First, there was no “Libraries” folder under my home folder, so I don’t know where the real ErrorLog went. The attached pdf is a copy of details in the error dialog.
This is from the combined game for The Devil’s Cauldron/Where Eagles Dare. My opponent did not reveal all of his units after the initial setup. I selected a unit, right clicked to attack and selected an unrevealed unit as the target when the error occurred. Reopened the module and tried again on a different unrevealed unit with the same result.
I sent my opponent an email requesting that he now reveal these units.