Connection Interrupted when opening a Communication Channel

Dear all
We have suddenly experienced problems after starting the Integration Directory.
When trying to edit one of the Communication Channels, a dialogue box appears saying:
Connection Interrupted
You can log on again once the server is available again
Do you want to log on again?
Password:
After entering the password, a new box appears saying: Reconnection to server was successful. Repeat the action
But the info about the communication channel is still not showing, and the same error message appears when trying to edit the Communication Channel again (going into a loop)
When debugging with Java Web Start the following error occurs:
#91 09:57:13 [AWT-EventQueue-0] DEBUG com.sap.aii.utilxi.swing.framework.cmd.OpenCommand: Open 'Communication Channel  | HRDCLNT270 | SenderABAPProxy (DirContext)'
#92 09:57:14 [AWT-EventQueue-0] DEBUG com.sap.aii.ib.clsif.login.LoginService: Found cached remote interface QueryServiceBean
#93 09:57:14 [AWT-EventQueue-0] DEBUG com.sap.aii.ib.clsif.login.LoginService: Found cached remote interface ObjectAccessBean
#94 09:57:15 [AWT-EventQueue-0] WARNING com.sap.aii.ib.clsif.gen.AccessUtil: A problem occurred that is tried to be solved by reconnect.
Thrown:
com.sap.engine.services.rmi_p4.P4RuntimeException: Unexpected exception.Nested exception is:
     java.io.InvalidClassException: com.sap.aii.ibdir.bom.cpa.Channel; local class incompatible: stream classdesc serialVersionUID = 366016170231986765, local class serialVersionUID = 2790972994638010697
     java.io.InvalidClassException: com.sap.aii.ibdir.bom.cpa.Channel; local class incompatible: stream classdesc serialVersionUID = 366016170231986765, local class serialVersionUID = 2790972994638010697
java.io.InvalidClassException: com.sap.aii.ibdir.bom.cpa.Channel; local class incompatible: stream classdesc serialVersionUID = 366016170231986765, local class serialVersionUID = 2790972994638010697
     at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
     at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
     at java.io.ObjectInputStream.readClassDesc(Unknown Source)
     at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
     at java.io.ObjectInputStream.readObject0(Unknown Source)
     at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
     at java.io.ObjectInputStream.readSerialData(Unknown Source)
     at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
     at java.io.ObjectInputStream.readObject0(Unknown Source)
     at java.io.ObjectInputStream.readObject(Unknown Source)
     at com.sap.aii.ib.sbeans.oa.ObjectAccessRemote_Stub.read(ObjectAccessRemote_Stub.java:1318)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at com.sap.engine.services.ejb.session.stateless_sp5.ObjectStubProxyImpl.invoke(ObjectStubProxyImpl.java:187)
     at $Proxy8.read(Unknown Source)
     at com.sap.aii.ib.clsif.oa.ObjectAccess.read(ObjectAccess.java:108)
     at com.sap.aii.ib.client.oa.ObjectHandler.read(ObjectHandler.java:97)
     at com.sap.aii.ib.gui.editor.XiDocument.load(XiDocument.java:310)
     at com.sap.aii.utilxi.swing.framework.cmd.OpenCommand.execute(OpenCommand.java:208)
     at com.sap.aii.utilxi.swing.framework.ExecutionContext.execute(ExecutionContext.java:196)
     at com.sap.aii.utilxi.swing.framework.ExecutionContext.executeSafe(ExecutionContext.java:134)
     at com.sap.aii.ib.gui.operations.OperationsServiceProvider.executeDefaultOperation(OperationsServiceProvider.java:206)
     at com.sap.aii.ib.gui.nav.HierarchyNode.executeDefaultOperation(HierarchyNode.java:59)
     at com.sap.aii.utilxi.swing.framework.navigation.tree.DefaultTreeCard.handleHierarchyEvent(DefaultTreeCard.java:123)
     at com.sap.aii.utilxi.swing.framework.navigation.impl.ThreadedTree.fireHierarchyActionEvent(ThreadedTree.java:472)
     at com.sap.aii.utilxi.swing.framework.navigation.impl.ThreadedTree.executeStandardOperation(ThreadedTree.java:1805)
     at com.sap.aii.utilxi.swing.framework.navigation.impl.ThreadedTree$DblClickHandler.mouseReleased(ThreadedTree.java:1770)
     at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
     at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
     at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
     at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
     at java.awt.Component.processMouseEvent(Unknown Source)
     at javax.swing.JComponent.processMouseEvent(Unknown Source)
     at java.awt.Component.processEvent(Unknown Source)
     at java.awt.Container.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Window.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
Does anyone have a solution to this problem? We could edit the Communication Channel earlier so it seems like the problem have occured during the last week.
Regards
Andreas

Hi Chirag
I've tried what you've suggested but the error messages does still appear when trying to edit the Communication Channel after exiting and starting the integration builder.
The error that concerns me is:
com.sap.engine.services.rmi_p4.P4RuntimeException: Unexpected exception.Nested exception is:
     java.io.InvalidClassException: com.sap.aii.ibdir.bom.cpa.Channel; local class incompatible: stream classdesc serialVersionUID = 366016170231986765, local class serialVersionUID = 2790972994638010697
     java.io.InvalidClassException: com.sap.aii.ibdir.bom.cpa.Channel; local class incompatible: stream classdesc serialVersionUID = 366016170231986765, local class serialVersionUID = 2790972994638010697
java.io.InvalidClassException: com.sap.aii.ibdir.bom.cpa.Channel; local class incompatible: stream classdesc serialVersionUID = 366016170231986765, local class serialVersionUID = 2790972994638010697
It seems like the class com.sap.aii.ibdir.bom.cpa.Channel has a different UID locally and in the stream...

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