IllegalStateException: no EJB receiver to handle

I have a client ad and a server using JBoss AS 7.1.1. On startup, my client connects perfectly to the server and gives me a remote interface. However, when I try to run the function through the interface, I get this exception:

Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: 
No EJB receiver available for handling [appName:GrahamsProjServer,modulename:GrahamsProjServer,distinctname:] 
combination for invocation context org.jboss.ejb.client.EJBClientInvocationContext@3a42f352
        at org.jboss.ejb.client.EJBClientContext.requireEJBReceiver(EJBClientContext.java:584)
        at org.jboss.ejb.client.ReceiverInterceptor.handleInvocation(ReceiverInterceptor.java:119)
        at org.jboss.ejb.client.EJBClientInvocationContext.sendRequest(EJBClientInvocationContext.java:181)
        at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:136)
        at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:121)
        at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:104)
        at $Proxy0.persistSchemas(Unknown Source)
        at grahamsprojclient.main.GrahamsProjScreen.btnPersistActionPerformed(Unknown Source)
        at grahamsprojclient.main.GrahamsProjScreen.access$400(Unknown Source)
        at grahamsprojclient.main.GrahamsProjScreen$5.actionPerformed(Unknown Source)
        at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
        at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
        at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
        at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
        at javax.swing.plaf.basic.BasicButtonListener.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)

An error does not appear on the server. It doesn't seem to even talk to the server when I run the function. How could it happen that at startup my client simply connects to the server, but when I try to run the function, it will not connect?