I don't have any issues with stock content that I have noticed.
Did you keep your old player profile folder? If so inside that folder are many CCH files these contain your statistics for each series that you...
Steam game files integrity check. Move or remove your user files and create a new player. You can roll back to AMS v1.5.01 via the Steam game...
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I am not sure if all of these were published in the beta/release versions but this should be a complete reference ordered by date. [ATTACH]
Steam game files integrity checked? Move / remove all your AMS user data from the documents folder and try again? All seems as it should here.
Separate names with a comma.