installed wrong version???

[Spicy]

I am new to the game and I just got it. When I am in game and press control v it says I am on version beta18d I am trying to install the OEM mod and its not working. It doesnt say there is a version for beta18d, is there any way I can go back to beta18c? If not are there any other fixes? Thanks so much.

[teeds]

The game version and OEM versions are not linked, just close in their numbering currently. MXBikes is on beta v18d and the OEMs are on V0.18.1C.