hey guys! i've just updated pixelmon to the beta 12 as requested, but i can't join the server. I thought it was a forge problem, but now i've created 2 profiles, one with latest forge and one with last that worked on the server. whenever i try to join minecraft tells me "Mod rejections [FMLMod:pixelmon(5.0.0-beta12)]. can't solve this..
Make sure the mod is running. On the main menu in the game hit the mods button and make sure it says pixelmon version 5.0.0 beta-12.
It could be that your download was corrupted or something.