The current pre-release of the client ("pioneer" in the version) is only compatible to itself. So you can only play with other testers. Please be aware!
ok so, i had to do it twice (got a little impatient and had to revert my progress a little for it) but ive located the mod. its "EXMEX Rebalanced" as upon downloading it, i went to go and test and instantly the menu for choosing mods was showing every one of my mods not selected and i know if i load my game, itll have the error log