Hey,

I installed it on my server, worked except the adventure clothes (it crashes then). If you want to restart it, without the mod, it keeps crashing. Just going to put the whole console message in there.

"[28-04 16:26:40 ] [Server] [Informatie] [16:26:40] [ERROR] [fml.ModTracker]: This world was saved with mod adventurebackpack which appears to be missing, things may not work well
[28-04 16:26:40 ] [Server] [Informatie] [16:26:40] [[Informatie]] [FML]: Injecting existing block and item data into this server instance
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:blockBackpack
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:blockSleepingBag
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:blockBackpack
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:backpackHose
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:blockSleepingBag
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:adventureSuit
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:machete
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:adventureBackpack
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:melonJuiceBottle
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:backpackComponent
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:adventureHat
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [[Informatie]] [FML]: Found a missing id from the world adventurebackpack:pistonBoots
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [ERROR] [FML]: There are unidentified mappings in this world - we are going to attempt to process anyway
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [ERROR] [FML]: Unidentified block: adventurebackpack:blockBackpack, id 165
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [ERROR] [FML]: Unidentified block: adventurebackpack:blockSleepingBag, id 166
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [ERROR] [FML]: Unidentified item: adventurebackpack:blockBackpack, id 165
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [ERROR] [FML]: Unidentified item: adventurebackpack:backpackHose, id 4102
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [ERROR] [FML]: Unidentified item: adventurebackpack:blockSleepingBag, id 166
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [ERROR] [FML]: Unidentified item: adventurebackpack:adventureSuit, id 4100
[28-04 16:26:41 ] [Server] [Informatie] [16:26:41] [ERROR] [FML]: Unidentified item: adventurebackpack:machete, id 4097"

Thanks in advance!

^What he said.

Nevermind, just going to reset the map. If someone could still awnser this for someone else, its always appreciated. :)

Forge should come up with a message saying if you would like to remove an the items from the server and asking you to either A: type /fml confirm to remove the data from your map or B: /fml cancel to stop the launch process.

I hope this helps.