again fukking mutlisell

I have again multisell problem what is wrong !?

Client: [Character: Ely - Account: elly - IP: 94.70.45.33] - Failed running: [C]

21 RequestBypassToServer - L2J Server Version: "1065" - DP Revision: "1062"

java.lang.NoClassDefFoundError: Could not initialize class net.sf.l2j.gameserver

.model.L2Multisell

        at net.sf.l2j.gameserver.model.actor.instance.L2MerchantInstance.onBypas

sFeedback(L2MerchantInstance.java:202)

        at net.sf.l2j.gameserver.clientpackets.RequestBypassToServer.runImpl(Req

uestBypassToServer.java:192)

        at net.sf.l2j.gameserver.clientpackets.L2GameClientPacket.run(L2GameClie

ntPacket.java:81)

        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)