Okey it took me a realy long time to solve this but i did it.
the problem was that buildcraft and industrial craft had a id collision but the server did't tell it.
So i found a fix for this on a Swedish "http://filarkiv.kbnet.se/minecraft/IC2.conf" forum but this was for 1.8_1. So i only replaced this
Display Spoiler
########## Block #
#########
block {
blockAlloy=231
blockAlloyGlass=230
blockCable=228
blockDoorAlloy=229
blockDynamite=236
blockDynamiteRemote=235
blockElectric=227
blockFenceIron=232
blockGenerator=246
blockHarz=240
blockITNT=239
blockLuminator=226
blockMachine=250
blockMachine2=223
blockMetal=224
blockMiningPipe=245
blockMiningTip=244
blockNuke=237
blockOreCopper=249
blockOreTin=248
blockOreUran=247
blockPersonal=225
blockReactorChamber=233
blockRubLeaves=242
blockRubSapling=241
blockRubWood=243
blockRubber=234
}
########
# Item #
########
item {
itemArmorAlloyChestplate=29923
itemArmorBatpack=29924
itemArmorBronzeBoots=29936
itemArmorBronzeChestplate=29938
itemArmorBronzeHelmet=29939
itemArmorBronzeLegs=29937
itemArmorJetpack=29954
itemArmorJetpackElectric=29953
itemArmorNanoBoots=29919
itemArmorNanoChestplate=29921
itemArmorNanoHelmet=29922
itemArmorNanoLegs=29920
itemArmorQuantumBoots=29915
itemArmorQuantumChestplate=29917
itemArmorQuantumHelmet=29918
itemArmorQuantumLegs=29916
itemArmorRubBoots=29955
itemBatCrystal=29985
itemBatLamaCrystal=29984
itemBatRE=29986
itemBatREDischarged=29983
itemBatSU=29982
itemCable=29928
itemCellBio=29973
itemCellBioRef=29971
itemCellCoal=29974
itemCellCoalRef=29972
itemCellCoolant=29950
itemCellEmpty=29981
itemCellLava=29980
itemCellUran=29951
itemCellUranDepleted=29947
itemCellUranEmpty=29945
itemCellUranEnriched=29946
itemCellWater=29962
itemCellWaterElectro=29925
itemCoin=29930
itemDoorAlloy=29929
itemDustBronze=29995
itemDustCoal=30000
itemDustCopper=29997
itemDustGold=29998
itemDustIron=29999
itemDustIronSmall=29994
itemDustTin=29996
itemDynamite=29959
itemDynamiteSticky=29958
itemFreq=29878
itemFuelCan=29976
itemFuelCanEmpty=29975
itemFuelCoalCmpr=29969
itemFuelCoalDust=29970
itemFuelPlantBall=29968
itemFuelPlantCmpr=29967
itemHarz=29961
itemIngotAdvIron=29993
itemIngotAlloy=29989
itemIngotBronze=29990
itemIngotCopper=29992
itemIngotTin=29991
itemIngotUran=29988
itemMatter=29932
itemNanoSaber=29893
itemNanoSaberOff=29892
itemOreUran=29987
itemPartAlloy=29931
itemPartCarbonFibre=29896
itemPartCarbonMesh=29895
itemPartCarbonPlate=29894
itemPartCircuit=29935
itemPartCircuitAdv=29934
itemPartCoalBall=29882
itemPartCoalBlock=29881
itemPartCoalChunk=29880
itemPartIndustrialDiamond=29879
itemPartIridium=29891
itemReactorCooler=29948
itemReactorPlating=29949
itemRemote=29957
itemRubber=29960
itemScanner=29964
itemScannerAdv=29963
itemScrap=29933
itemScrapbox=29883
itemTFBP=29890
itemTFBPChilling=29887
itemTFBPCultivation=29889
itemTFBPDesertification=29886
itemTFBPFlatification=29885
itemTFBPIrrigation=29888
itemTinCan=29966
itemTinCanFilled=29965
itemToolBronzeAxe=29943
itemToolBronzeHoe=29940
itemToolBronzePickaxe=29944
itemToolBronzeSpade=29941
itemToolBronzeSword=29942
itemToolChainsaw=29977
itemToolCutter=29897
itemToolDDrill=29978
itemToolDrill=29979
itemToolMEter=29926
itemToolMiningLaser=29952
itemToolPainter=29914
itemToolPainterBlack=29913
itemToolPainterBlue=29909
itemToolPainterBrown=29910
itemToolPainterCloud=29901
itemToolPainterCyan=29907
itemToolPainterDarkGrey=29905
itemToolPainterGreen=29911
itemToolPainterLightGrey=29906
itemToolPainterLime=29903
itemToolPainterMagenta=29900
itemToolPainterOrange=29899
itemToolPainterPink=29904
itemToolPainterPurple=29908
itemToolPainterRed=29912
itemToolPainterWhite=29898
itemToolPainterYellow=29902
itemToolWrench=29927
itemToolWrenchElectric=29884
itemTreetap=29956
}
It works for me now.
Hoppe this can help some one else too.
