13 nov. 2014, 23:04

java.lang.NoClassDefFoundError: mods/aginsun/kingdoms/client/guis/requireFixing/GuiBuildScreen

En des mods que tu as installés a une incompatibilité serveur.

Celui là visiblement :
        taleofkingdoms{1.5} [Tale of Kingdoms] (Tale-of-Kingdoms-V1.5-BETA.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available