hello, i recently installed votifier and RewardVoting and this happens upon loading them!

Console:
net.minecraft.server.v1_7_R1.MinecraftServer.a(MinecraftServer.java:275) [craftbukkit-1.7.2-2974.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
09.03 13:44:59 [Server] INFO at net.minecraft.server.v1_7_R1.MinecraftServer.g(MinecraftServer.java:319) [craftbukkit-1.7.2-2974.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
09.03 13:44:59 [Server] INFO at net.minecraft.server.v1_7_R1.MinecraftServer.m(MinecraftServer.java:342) [craftbukkit-1.7.2-2974.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
09.03 13:44:59 [Server] INFO at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:280) [craftbukkit-1.7.2-2974.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
09.03 13:44:59 [Server] INFO at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:298) [craftbukkit-1.7.2-2974.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
09.03 13:44:59 [Server] INFO at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:384) [craftbukkit-1.7.2-2974.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
09.03 13:44:59 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457) [craftbukkit-1.7.2-2974.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
09.03 13:44:59 [Server] INFO at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:218) [craftbukkit-1.7.2-2974.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
09.03 13:44:59 [Server] INFO at com.vexsoftware.votifier.Votifier.onEnable(Votifier.java:172) [Votifier.jar:?]
09.03 13:44:59 [Server] INFO at com.vexsoftware.votifier.net.VoteReceiver.<init>(VoteReceiver.java:75) [Votifier.jar:?]
09.03 13:44:59 [Server] INFO at com.vexsoftware.votifier.net.VoteReceiver.initialize(VoteReceiver.java:81) [Votifier.jar:?]
09.03 13:44:59 [Server] INFO at java.net.ServerSocket.bind(ServerSocket.java:330) ~[?:1.7.0_45]
09.03 13:44:59 [Server] INFO at java.net.ServerSocket.bind(ServerSocket.java:376) ~[?:1.7.0_45]
09.03 13:44:59 [Server] INFO at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376) ~[?:1.7.0_45]
09.03 13:44:59 [Server] INFO at java.net.PlainSocketImpl.socketBind(Native Method) ~[?:1.7.0_45]
09.03 13:44:59 [Server] INFO java.net.BindException: Address already in use
09.03 13:44:59 [Server] ERROR with hosting services and, if so, you should check with your hosting provider.
09.03 13:44:59 [Server] ERROR IP address and port are not already in use. This is a common problem
09.03 13:44:59 [Server] ERROR Error initializing vote receiver. Please verify that the configured
09.03 13:44:59 [Server] INFO Enabling Votifier v1.9