Ok so I'm totally stumped here. I have the following worlds: world, world_the_end, world_nether, oldworld, pvpworld. I can place TNT on any of them but in world, oldworld. Even when I OP myself I cannot place TNT in those worlds. I do have a plugin "modifyworld" that controls TNT placement but that one will send a visible chat message to the usuer if its blocking the placement of TNT. Whats happening is the TNT just vanishes when I place it and then when I rightclick again it's back in my hand. I Have worldgaurd but I never set any of the blacklists the world config files for all the maps are identical. I don't use essentialsprotect so thats not blocking anything. My Plugins (54): PlugMan, c3p0Extension, BukkitCompat, ScubaKit, Vault, Backpack, ModifyworldX, Multiverse-Core, MobBountyReloaded, DwarfForge, TreeAssist, MCDocs, dynmap, SafeCity, GeoIPTools, Horses, RetractableBridge, BringBackTheEnd, SpamHammer, ProtocolLib, mcMMO, Lift, zPermissions, WorldEdit, PetitionPlugin, Multiverse-Inventories, SilkierTouch, Multiverse-NetherPortals, PorteCoulissante, SignShop, Stargate, LogBlock, LWC, WorldGuard, MineBackup, PistonSmelter, CraftBukkitUpToDate, BKCommonLib, Tombstone, DeathMessages, Herochat, ButtonWarp, Fly for Food, Giant Trees, Essentials, WorldBorder, ServerSigns, RecipeManager, MCBans, TreasureChest, ChestShop, EssentialsSpawn, Dynmap-HeroChat, Train Carts