I am currently setting up a server, but run into this problem every time I try to interact (place and use, but not destroy) with various blocks added by mods inside the game. These include, but are not limited to: Lucky Blocks, Chest (Battle Towers) and chests added by Iron Chests. The Server crashes instantly and I get following crash report (taken from fml): java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft (Full Log: https://pastebin.com/9FRpSqX9)

There appear to be errors with the following mods, from what I can understand: TooManyItems, ChocolateQuest (Better Dungeons), Metroid3Cubed, MoreSwords, Tree Capitator and Twilight Forest. All are PlayerInteractEvent errors.

 

Also, Dungeons by BetterDungeons are not generated.

Edited May 30, 20187 yr by LetsDia
adding additional information

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