Serializable classes need to have serialVersionID

plugins/org.eclipse.jem.proxy/proxy/org/eclipse/jem/internal/proxy/core/ThrowableProxy.java

diff --git a/plugins/org.eclipse.jem.proxy/proxy/org/eclipse/jem/internal/proxy/core/ThrowableProxy.java b/plugins/org.eclipse.jem.proxy/proxy/org/eclipse/jem/internal/proxy/core/ThrowableProxy.java
index 94ce4b4..dd8014f 100644
--- a/plugins/org.eclipse.jem.proxy/proxy/org/eclipse/jem/internal/proxy/core/ThrowableProxy.java
+++ b/plugins/org.eclipse.jem.proxy/proxy/org/eclipse/jem/internal/proxy/core/ThrowableProxy.java
@@ -23,6 +23,11 @@
  */
 public abstract class ThrowableProxy extends java.lang.Exception implements IBeanProxy {
    /**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
+
+/**
     * Constructs an <code>Exception</code> with no specified detail message. 
     */
    public ThrowableProxy() {