booscooldown error

[19:22:44 ERROR]: Could not pass event PlayerCommandPreprocessEvent to boosCooldowns v3.7.2
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427) ~[spigot.jar:git-Spigot-1177]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-1177]
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30) ~[spigot.jar:git-Spigot-1177]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478) [spigot.jar:git-Spigot-1177]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.PlayerConnection.handleCommand(PlayerConnection.java:924) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:813) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.PacketPlayInChat.handle(PacketPlayInChat.java:65) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:647) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:259) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:530) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:442) [spigot.jar:git-Spigot-1177]
        at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [spigot.jar:git-Spigot-1177]
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 11
        at java.lang.String.charAt(String.java:658) ~[?:1.7.0_45]
        at java.util.regex.Matcher.appendReplacement(Matcher.java:772) ~[?:1.7.0_45]
        at java.util.regex.Matcher.replaceAll(Matcher.java:906) ~[?:1.7.0_45]
        at java.lang.String.replaceAll(String.java:2162) ~[?:1.7.0_45]
        at cz.boosik.boosCooldown.BoosCoolDownManager.cd(BoosCoolDownManager.java:87) ~[?:?]
        at cz.boosik.boosCooldown.BoosCoolDownManager.coolDown(BoosCoolDownManager.java:137) ~[?:?]
        at cz.boosik.boosCooldown.BoosCoolDownListener.checkRestrictions(BoosCoolDownListener.java:68) ~[?:?]
        at cz.boosik.boosCooldown.BoosCoolDownListener.onPlayerCommandPreprocess(BoosCoolDownListener.java:175) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor198.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_45]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_45]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425) ~[spigot.jar:git-Spigot-1177]
        ... 15 more