This is a very strange thing that just occurred and it does not seem normal.
Before acquiring the Return of Rome DLC, I have all three previous DLCs loaded - Lords of the West, Dawn of the Dukes and Dynasties of India - and they all played and ran perfectly fine.
However, after RoR was installed, I decided to go back to these DLCs, however the minute I click on any one of the campaign icons after getting to their world tab, I am met with a black screen and a forever loading stage, when I usually expect a second or two of it before being met with the campaign trail. I had no way of getting out of it other than quitting the game outright.
I feel like there is something wrong and I would really appreciate the help, thank you.
P.S I use Microsoft not Steam.