Right click on source editor cause a NPE. This prevent the menu from opening.

#1 the stacktrace :

java.lang.NullPointerException
	at
org.netbeans.modules.j2ee.ejbcore.api.methodcontroller.EjbMethodController.createFromClass(EjbMethodController.java:64)
	at
org.netbeans.modules.j2ee.ejbcore.ui.logicalview.ejb.action.EJBActionGroup.enable(EJBActionGroup.java:87)
	at
org.openide.util.actions.NodeAction$DelegateAction.resultChanged(NodeAction.java:560)
	at org.openide.util.actions.NodeAction$DelegateAction.<init>(NodeAction.java:506)
	at
org.openide.util.actions.NodeAction.createContextAwareInstance(NodeAction.java:306)
	at
org.netbeans.modules.j2ee.ejbcore.ui.logicalview.ejb.action.EJBActionGroup.createContextAwareInstance(EJBActionGroup.java:122)
	at
org.netbeans.modules.editor.NbEditorKit$NbBuildPopupMenuAction.translateContextLookupAction(NbEditorKit.java:332)
	at
org.netbeans.modules.editor.NbEditorKit$NbBuildPopupMenuAction.addAction(NbEditorKit.java:377)
	at
org.netbeans.modules.editor.NbEditorKit$NbBuildPopupMenuAction.buildPopupMenu(NbEditorKit.java:287)
	at
org.netbeans.editor.ext.ExtKit$BuildPopupMenuAction.actionPerformed(ExtKit.java:230)
	at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:228)
	at org.netbeans.editor.ext.ExtEditorUI.showPopupMenu(ExtEditorUI.java:139)
	at org.netbeans.editor.ext.ExtCaret.showPopup(ExtCaret.java:359)
	at org.netbeans.editor.ext.ExtCaret.mouseReleased(ExtCaret.java:366)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:232)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
	at java.awt.Component.processMouseEvent(Component.java:5957)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3280)
	at java.awt.Component.processEvent(Component.java:5722)
	at java.awt.Container.processEvent(Container.java:1966)
	at java.awt.Component.dispatchEventImpl(Component.java:4365)
	at java.awt.Container.dispatchEventImpl(Container.java:2024)
	at java.awt.Component.dispatchEvent(Component.java:4195)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4228)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
	at java.awt.Container.dispatchEventImpl(Container.java:2010)
	at java.awt.Window.dispatchEventImpl(Window.java:2300)
	at java.awt.Component.dispatchEvent(Component.java:4195)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

#2 Example File:

package info.aide.assistance.bean;

import java.math.BigDecimal;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.TableGenerator;

/**
 *
 * @author BJB
 */
@Entity
public class TaxRow {
    
    /** Creates a new instance of TaxRow */
    public TaxRow() {
    }
    
    /**
     * Technical identifier
     */
    private long identifier;
    
    /**
     * Invoice that is holding this row
     */
    private Invoice invoice;


    /**
     * The tax amount
     */
    BigDecimal amount;
    
    /**
     * The amount that was used to compute the tax amount
     */
    BigDecimal baseAmount;
    
    /**
     * The tax ratio that was applied
     */
    BigDecimal taxRatio;
    
    /**
     * The tax description
     */
    String taxDescription;
    
    @Id
    //@Column(nullable=false, unique=true, updatable=false,insertable=false)
    @TableGenerator(name = "TAXROW_SEQUENCE", table = "IDGENERATOR",
pkColumnName = "SEQ_NAME", valueColumnName = "SEQ_COUNT", pkColumnValue =
"TAXROWIDENTIFIER", initialValue=0, allocationSize=1)
    @GeneratedValue(strategy = GenerationType.TABLE, generator = "TAXROW_SEQUENCE")
    public long getIdentifier() {
        return identifier;
    }

    public void setIdentifier(long identifier) {
        this.identifier = identifier;
    }

    @ManyToOne(optional=false,targetEntity=Invoice.class,cascade=
CascadeType.PERSIST)
   
@JoinColumn(name="INVOICE_IDENTIFIER",nullable=false,referencedColumnName="IDENTIFIER")
    public Invoice getInvoice(){
        return invoice;
    }

    public void setInvoice(Invoice invoice) {
        this.invoice = invoice;
    }   
    
}