Whenever i try to log in it says logging in then end of stream y is this

Did you update to 1.2? The server doesn't run on 1.2 yet

how do i rollback then? im having the same issue <object class="emojione" data="https://resources.enjin.com/1489581540/themes/core/images/emojione/svg/2639.svg?0" type="image/svg+xml" standby=":(">:(</object>

is there a way to rollback without uninstalling? cuz i dont want to lose my saved waypoints from mods...