Cannot host Aberration Non Dedicated Server anymore

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I cannot host a non dedicated server in Aberration or join one. The game crashes if I try to host, and tells me I do not have the DLC if I try to join. I can get into official servers with Aberration, and I can play Aberration single player. I can host a non dedicated server in Scorched Earth without any issues, but I cannot join a non-dedicated Scorched Earth game. I have tried uninstalling ark and reinstalling it. I also tried to run it with no mods and it still crashed. I was playing on my husband's non dedicated server in Aberration the day before the 340 patch came out with no issues. He is not having any issues. I submitted a request to wildcard and they directed me to this forum. 

I don't know anything about the backend of the game, such as where to find logs of the crashes or anything, sorry. If you tell me where to go, I can share that info if needed.