If it helps, mine basically says the mod uses models from DLCs that I do not have, so if you know where the models are from you can tell which are required or use base game models to make it more accessible. I have most of the DLCs except Aces, fate of finland, tribute to normandy '44, the commander deluxe pack, history pass, and men of steel and I did not preorder the game so any divisions you got from doing that.

I am only missing Turda, Tribute to the liberation of Italy, Men of Steel and Tribute to Normandy '44. Still getting the dlc error post

I get the error. Only missing hell's highway and dulka pass.

I also get the error, and I own only some of the DLC

I am pretty sure the answer to this question is every single ♥♥♥♥♥♥♥ DLC. I bought each DLC one by one until only Dukla Pass was missing. Yet I still couldn't play the mod. Turns out by updating the mod for Dukla Pass the developer also somehow made it necessary to play the mod.

Yeah, I have every single DLC but the same Error code shows up.