Installed mods disappeared

All my installed mods disappeared the same day co-op campaigns were introduced, I installed Arabian Conquests a couple a days ago where in I have saved games. I installed a bunch of mods today, and later today when launching the game, the were all disappeared, except from Arabian Conquests. WHAT IS GOING ON HERE???

You need to re-enable your mods after each patch by going to the Mods tab

Thank you. work now.