From: Vancouver, BC
Did you change the location of Austria's starting corps in Galicia? Because in the video they seem to arrive at impossible locations for turn #1 unless you railroaded them, which Crow says was not allowed in your game.
No, in writing this mod, I did not change the starting location of any CP units. However, in combination with a house rule that neither side would sell tech chits on the first turn, I gave Austria-Hungary and Russia 44 MPPs each to start and Germany 60 MPPs. This allows the Austro-Hungarians and the Russians to operationally move two corps on their first turn, and the Germans three corps plus a detachment. That explains how the Austrian units arrived in those locations. (Whether that is a smart move is another question.)
After we started play-testing a mod, I found a small glitch in a DE I had written to give the Russians fall-back mobilization locations, so we suspended the game. At the same time, the new patch came out (which corrected that problem), so I re-wrote the mod on the basis of the 1.05 version of the game. The updated version contains new decision events affecting Serbia, Greece and Turkey in which are the basis for its name. But it uses all the new settings in the 1.05 patch for Montenegro and Russia.
If you are interested in checking it out, I would be happy to share it with you or anyone else who would like to play-test it.