It appears there is still something wrong with the Grand Offensive mechanism (playing CG as Centrals with 105c in July 1916). This same error has been noted in other posts.
First, my attack by GE II Army on Bar le Duc terminates after one round for no apparent reason, and the Germans lose the battle. (see "Grand Offensive 1 round" attachment) Germans have lots of corps yet to commit, and the French have nothing in one of the sub battles after round 1 (note the empty French deployment box in the upper right corner).
Then, even more confusing, at the start of the next turn I see a message (circled in red in the other attached file) that says I "won the Grand Offensive at Bar le Duc" and Germany got +10NW?
If it matters, this was the 3rd grand offensive I planned for the year on the Western Front. The previous 2 had to be canceled because the French retreated out of the spaces I had planned on attacking, although the planning and the start of the Grand Offensive seemed to work fine.
Doug