diff --git a/framework/src/main/java/org/apache/felix/framework/Felix.java b/framework/src/main/java/org/apache/felix/framework/Felix.java
index 15aecd6..6062f97 100644
--- a/framework/src/main/java/org/apache/felix/framework/Felix.java
+++ b/framework/src/main/java/org/apache/felix/framework/Felix.java
@@ -557,7 +557,9 @@
                                 }
                                 catch (AccessControlException ex)
                                 {
-                                    throw new SecurityException(ex);
+                                    SecurityException se = new SecurityException(ex.getMessage());
+                                    se.initCause(ex);
+                                    throw se;
                                 }
                             }
                         });
@@ -571,7 +573,11 @@
                         } 
                         catch (Throwable t)
                         {
-                            throw new SecurityException("Unable to install custom SecurityManager: " + security, t); 
+                            SecurityException se =
+                                new SecurityException(
+                                    "Unable to install custom SecurityManager: " + security);
+                            se.initCause(t);
+                            throw se;
                         }
                     }
                 }
diff --git a/framework/src/main/java/org/apache/felix/framework/URLHandlersStreamHandlerProxy.java b/framework/src/main/java/org/apache/felix/framework/URLHandlersStreamHandlerProxy.java
index 4278762..debd1fb 100644
--- a/framework/src/main/java/org/apache/felix/framework/URLHandlersStreamHandlerProxy.java
+++ b/framework/src/main/java/org/apache/felix/framework/URLHandlersStreamHandlerProxy.java
@@ -328,7 +328,9 @@
             } 
             catch (NoSuchMethodException e) 
             {
-                throw new UnsupportedOperationException(e);
+                RuntimeException rte = new UnsupportedOperationException(e.getMessage());
+                rte.initCause(e);
+                throw rte;
             }
             try 
             {