Program: 22405
Project: 22405
Buggy source:
private static void registerExosuitUpgrades(){
  if (Config.enableExosuit) {
    if (Config.enableJetpack) {
      jetpack=new ItemExosuitJetpack().setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(jetpack,"String_Node_Str");
    }
    if (Config.enableWings) {
      wings=new ItemExosuitWings().setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(wings,"String_Node_Str");
    }
    if (Config.enablePowerFist) {
      powerFist=new ItemExosuitUpgrade(ExosuitSlot.bodyHand,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(powerFist,"String_Node_Str");
    }
    if (Config.enableExtendoFist) {
      extendoFist=new ItemExosuitUpgrade(ExosuitSlot.bodyHand,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(extendoFist,"String_Node_Str");
    }
    if (Config.enableThrusters) {
      thrusters=new ItemExosuitSidepack().setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(thrusters,"String_Node_Str");
    }
    if (Config.enableFallAssist) {
      fallAssist=new ItemExosuitUpgrade(ExosuitSlot.bootsTop,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(fallAssist,"String_Node_Str");
    }
    if (Config.enableJumpAssist) {
      jumpAssist=new ItemExosuitUpgrade(ExosuitSlot.bootsTop,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(jumpAssist,"String_Node_Str");
    }
    if (Config.enableRunAssist) {
      runAssist=new ItemExosuitUpgrade(ExosuitSlot.legsLegs,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(runAssist,"String_Node_Str");
    }
    if (Config.enableDoubleJump) {
      doubleJump=new ItemExosuitUpgrade(ExosuitSlot.bootsFeet,"String_Node_Str",null,1).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(doubleJump,"String_Node_Str");
    }
    if (Config.enableCanningMachine) {
      canner=new ItemExosuitUpgrade(ExosuitSlot.legsHips,"String_Node_Str",null,1).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(canner,"String_Node_Str");
    }
    if (Config.enablePitonDeployer) {
      pitonDeployer=new ItemExosuitUpgrade(ExosuitSlot.bodyHand,"String_Node_Str",null,1).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(pitonDeployer,"String_Node_Str");
    }
    if (Config.enableStealthUpgrade) {
      stealthUpgrade=new ItemExosuitUpgrade(ExosuitSlot.legsLegs,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(stealthUpgrade,"String_Node_Str");
    }
    if (Config.enableEnderShroud) {
      enderShroud=new ItemExosuitUpgrade(ExosuitSlot.vanity,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(enderShroud,"String_Node_Str");
    }
    if (Config.enableReinforcedTank) {
      reinforcedTank=new ItemTank(Config.reinforcedTankCapacity,"String_Node_Str","String_Node_Str").setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(reinforcedTank,"String_Node_Str");
    }
    if (Config.enableUberReinforcedTank) {
      uberReinforcedTank=new ItemTank(Config.uberReinforcedTankCapacity,"String_Node_Str","String_Node_Str").setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(uberReinforcedTank,"String_Node_Str");
    }
  }
}

Fixed version (ground truth):
private static void registerExosuitUpgrades(){
  if (Config.enableExosuit) {
    if (Config.enableJetpack) {
      jetpack=new ItemExosuitJetpack().setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(jetpack,"String_Node_Str");
    }
    if (Config.enableWings) {
      wings=new ItemExosuitWings().setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(wings,"String_Node_Str");
    }
    if (Config.enablePowerFist) {
      powerFist=new ItemExosuitUpgrade(ExosuitSlot.BODY_HAND,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(powerFist,"String_Node_Str");
    }
    if (Config.enableExtendoFist) {
      extendoFist=new ItemExosuitUpgrade(ExosuitSlot.BODY_HAND,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(extendoFist,"String_Node_Str");
    }
    if (Config.enableThrusters) {
      thrusters=new ItemExosuitSidepack().setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(thrusters,"String_Node_Str");
    }
    if (Config.enableFallAssist) {
      fallAssist=new ItemExosuitUpgrade(ExosuitSlot.BOOTS_TOP,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(fallAssist,"String_Node_Str");
    }
    if (Config.enableJumpAssist) {
      jumpAssist=new ItemExosuitUpgrade(ExosuitSlot.BOOTS_TOP,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(jumpAssist,"String_Node_Str");
    }
    if (Config.enableRunAssist) {
      runAssist=new ItemExosuitUpgrade(ExosuitSlot.LEGS_LEGS,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(runAssist,"String_Node_Str");
    }
    if (Config.enableDoubleJump) {
      doubleJump=new ItemExosuitUpgrade(ExosuitSlot.BOOTS_FEET,"String_Node_Str",null,1).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(doubleJump,"String_Node_Str");
    }
    if (Config.enableCanningMachine) {
      canner=new ItemExosuitUpgrade(ExosuitSlot.LEGS_HIPS,"String_Node_Str",null,1).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(canner,"String_Node_Str");
    }
    if (Config.enablePitonDeployer) {
      pitonDeployer=new ItemExosuitUpgrade(ExosuitSlot.BODY_HAND,"String_Node_Str",null,1).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(pitonDeployer,"String_Node_Str");
    }
    if (Config.enableStealthUpgrade) {
      stealthUpgrade=new ItemExosuitUpgrade(ExosuitSlot.LEGS_LEGS,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(stealthUpgrade,"String_Node_Str");
    }
    if (Config.enableEnderShroud) {
      enderShroud=new ItemExosuitUpgrade(ExosuitSlot.VANITY,"String_Node_Str",null,0).setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(enderShroud,"String_Node_Str");
    }
    if (Config.enableReinforcedTank) {
      reinforcedTank=new ItemTank(Config.reinforcedTankCapacity,"String_Node_Str","String_Node_Str").setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(reinforcedTank,"String_Node_Str");
    }
    if (Config.enableUberReinforcedTank) {
      uberReinforcedTank=new ItemTank(Config.uberReinforcedTankCapacity,"String_Node_Str","String_Node_Str").setCreativeTab(Steamcraft.tab).setUnlocalizedName("String_Node_Str").setTextureName("String_Node_Str");
      GameRegistry.registerItem(uberReinforcedTank,"String_Node_Str");
    }
  }
}