Hello everyone, seems like i am not the only one to enjoy this wonderful scenario.
As I have only played through a US campaign on low difficulty so far (just to get a feel for the scenario), I must say this is a well rounded piece of work that has all the detail I could want.
Having read through quite a bit of this thread I was hoping to find a solution to my problems below, needless to say i partially failed.
I have however run into a couple of issues that I have found since i reached the middle of the 3rd tech era to the end of the 4th.
1. i found that upgrading my units late in the game can crash my game often. I have used the disband and then upgrade technique to get around that. I am hoping there is a solution to that other than just straight replacing obsolete units with new build instead of upgrading.
2. For my late game US units, some seem to not have the upgrade function available at all on them, even though the CP clearly states that they are in line to upgrade. Examples of this ive found are the Martin MB-1 Bomber to Martin NBS-1 Bomber, Browning M1917 MG to Browning M1919 MG, M1917 Six Ton Tank to Renault NC Light Tank Export.
3. At the same time as the aformentioned issue above, i experience cities completing units and they dont appear at all in the cities that just built them. I.E. I queue up a Colorado Class BB to be built in San Francisco, it finishes and no unit appears in SF. There are others that do the same thing, Douglas DT-1 and DT-2, Renault NC Light Tank, Mark VIII Tank, Home Guard WW1 and the Browning M1919 MG. All of those units i can order, finish (even rush) but not actually recieve. Some units that I have built before, I don't recieve either (built 3 Colorado Class previously).
Despite these problems I enjoy the game alot and applaud the effort of everyone involved the production of it. I especially enjoy the lengths to which historical accuracy has been maintained and all of the 'what if' units and the rich flavor they add.