Plugin Help InfoBoard/PEX Problem

[14:30:27] [Server thread/WARN]: [InfoBoardReloaded] Task #83 for InfoBoardReloaded v1.4.0 generated an exception
ru.tehkode.permissions.exceptions.PermissionsNotAvailable: Permissions manager is not accessable. Is the PermissionsEx plugin enabled?
at ru.tehkode.permissions.bukkit.PermissionsEx.getPermissionManager(PermissionsEx.java:405) ~[?:?]
at net.milkbowl.vault.permission.plugins.Permission_PermissionsEx.getUser(Permission_PermissionsEx.java:243) ~[?:?]
at net.milkbowl.vault.permission.plugins.Permission_PermissionsEx.getPlayerGroups(Permission_PermissionsEx.java:252) ~[?:?]
at com.pixar02.infoboard.APIS.Vault.getRank(Vault.java:25) ~[?:?]
at com.pixar02.infoboard.scoreboard.Create.createScoreBoard(Create.java:38) ~[?:?]
at com.pixar02.infoboard.scoreboard.Update.updateScoreBoard(Update.java:47) ~[?:?]
at com.pixar02.infoboard.Timers$2.run(Timers.java:84) ~[?:?]
at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:723) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
What The Hell Happened To it????? It worked fine until i changed rank ladders on PEX