oui niveau serveur c'est ok je pense mais j'obtiens ca pour le client
2013-01-04 17:43:34 [INFO] [STDOUT] Connecting to 127.0.0.1, 25565
2013-01-04 17:43:35 [WARNING] [ForgeModLoader] The mod Lepko-EasyCrafting was not found on the server you connected to, but requested that the server side be present
2013-01-04 17:43:35 [WARNING] [ForgeModLoader] The mod pitman-87_TF2_Teleporter was not found on the server you connected to, but requested that the server side be present
2013-01-04 17:43:35 [WARNING] [ForgeModLoader] The mod TC was not found on the server you connected to, but requested that the server side be present
2013-01-04 17:43:35 [FINE] [ForgeModLoader] The server has compatibility level 2
2013-01-04 17:43:35 [FINE] [ForgeModLoader] The difference set is not equal: (une liste de blocs appartenant à des mods qui ne sont pas sur le serveur mais en client)
2013-01-04 17:43:35 [SEVERE] [ForgeModLoader] FML has detected item discrepancies
2013-01-04 17:43:35 [SEVERE] [ForgeModLoader] Missing items : {}
2013-01-04 17:43:35 [SEVERE] [ForgeModLoader] Mismatched items : {100=(Item 100, Type akq, owned by Minecraft, ordinal 1, name null, claimedModId null, Item 100, Type TMIItemMushroomCap, owned by mod_TooManyItems, ordinal 1, name null, claimedModId null), 115=(Item 115, Type alh, owned by Minecraft, ordinal 0, name null, claimedModId null, Item 115, Type TMIItemCrop, owned by mod_TooManyItems, ordinal 3, name null, claimedModId null), 99=(Item 99, Type akq, owned by Minecraft, ordinal 0, name null, claimedModId null, Item 99, Type TMIItemMushroomCap, owned by mod_TooManyItems, ordinal 0, name null, claimedModId null), 52=(Item 52, Type ald, owned by Minecraft, ordinal 0, name null, claimedModId null, Item 52, Type TMIItemSpawner, owned by mod_TooManyItems, ordinal 0, name null, claimedModId null), 59=(Item 59, Type ajq, owned by Minecraft, ordinal 0, name null, claimedModId null, Item 59, Type TMIItemCrop, owned by mod_TooManyItems, ordinal 0, name null, claimedModId null), 78=(Item 78, Type amw, owned by Minecraft, ordinal 0, name null, claimedModId null, Item 78, Type TMIItemSnow, owned by mod_TooManyItems, ordinal 0, name null, claimedModId null), 104=(Item 104, Type ami, owned by Minecraft, ordinal 0, name null, claimedModId null, Item 104, Type TMIItemCrop, owned by mod_TooManyItems, ordinal 1, name null, claimedModId null), 105=(Item 105, Type ami, owned by Minecraft, ordinal 1, name null, claimedModId null, Item 105, Type TMIItemCrop, owned by mod_TooManyItems, ordinal 2, name null, claimedModId null)}
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Scanned 1211 recipes in 0,01890846 seconds == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] [ModCompat] Loading mod compatibility modules. == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] [ModCompat] [IC2] Checking for mod... == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] [ModCompat] [IC2] Mod found. Loading... == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] [ModCompat] [IC2] Loaded. == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] [ModCompat] Finished. == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: we == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: wh == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: wk == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: ic2.core.RecipeGradual == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: ic2.core.RecipeGradual == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: ic2.core.RecipeGradual == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: ic2.core.RecipeGradual == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: backpack.RecipeEnhanceBackpack == T:Minecraft main thread
2013-01-04 17:43:36 [INFO] [Lepko-EasyCrafting] Skipped unknown recipe: backpack.RecipeRecolorBackpack == T:Minecraft main thread
Voilà donc je pense que c'est un bug d'items 100 et suivants.