DenmarkAddresses "/addpoints" console error log

>addpoints duckofshroom 3
[13:07:24 WARN]: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '0' for key 'id'
[13:07:24 WARN]:        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[13:07:24 WARN]:        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
[13:07:24 WARN]:        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[13:07:24 WARN]:        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
[13:07:24 WARN]:        at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
[13:07:24 WARN]:        at com.mysql.jdbc.Util.getInstance(Util.java:382)
[13:07:24 WARN]:        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1039)
[13:07:24 WARN]:        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3593)
[13:07:24 WARN]:        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3525)
[13:07:24 WARN]:        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986)
[13:07:24 WARN]:        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140)
[13:07:24 WARN]:        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2620)
[13:07:24 WARN]:        at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1662)
[13:07:24 WARN]:        at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1581)
[13:07:24 WARN]:        at com.instancedev.addresses.Main.mysqlAddPoints(Main.java:441)
[13:07:24 WARN]:        at com.instancedev.addresses.Main.onCommand(Main.java:181)
[13:07:24 WARN]:        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
[13:07:24 WARN]:        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:181)
[13:07:24 WARN]:        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServer.java:767)
[13:07:24 WARN]:        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchServerCommand(CraftServer.java:753)
[13:07:24 WARN]:        at net.minecraft.server.v1_7_R4.DedicatedServer.aB(DedicatedServer.java:326)
[13:07:24 WARN]:        at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:290)
[13:07:24 WARN]:        at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584)
[13:07:24 WARN]:        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490)
[13:07:24 WARN]:        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628)