######## Deleted an item:

java.sql.SQLException: Illegal operation on empty result set.
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1056)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
        at com.mysql.jdbc.ResultSetImpl.checkRowPos(ResultSetImpl.java:817)
        at com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2578)
        at com.mysql.jdbc.ResultSetImpl.getInt(ResultSetImpl.java:2719)
        at com.mchange.v2.c3p0.impl.NewProxyResultSet.getInt(NewProxyResultSet.java:2573)
        at net.sf.l2j.gameserver.handler.admincommandhandlers.AdminEditNpc.findOrderTradeList(AdminEditNpc.java:1057)
        at net.sf.l2j.gameserver.handler.admincommandhandlers.AdminEditNpc.delShopItem(AdminEditNpc.java:575)
        at net.sf.l2j.gameserver.handler.admincommandhandlers.AdminEditNpc.useAdminCommand(AdminEditNpc.java:190)
        at net.sf.l2j.gameserver.network.clientpackets.RequestBypassToServer.runImpl(RequestBypassToServer.java:100)
        at net.sf.l2j.gameserver.network.clientpackets.L2GameClientPacket.run(L2GameClientPacket.java:75)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)



######## Added a item


com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '91002-6' for key 'PRIMARY
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
        at com.mysql.jdbc.Util.getInstance(Util.java:381)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1016)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3376)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3308)
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1837)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1961)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2543)
        at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1737)
        at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:998)
        at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.execute(NewProxyPreparedStatement.java:989)
        at net.sf.l2j.gameserver.handler.admincommandhandlers.AdminEditNpc.storeTradeList(AdminEditNpc.java:972)
        at net.sf.l2j.gameserver.handler.admincommandhandlers.AdminEditNpc.addShopItem(AdminEditNpc.java:628)
        at net.sf.l2j.gameserver.handler.admincommandhandlers.AdminEditNpc.useAdminCommand(AdminEditNpc.java:184)
        at net.sf.l2j.gameserver.network.clientpackets.RequestBypassToServer.runImpl(RequestBypassToServer.java:100)
        at net.sf.l2j.gameserver.network.clientpackets.L2GameClientPacket.run(L2GameClientPacket.java:75)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)