diff --git a/js/src/xpconnect/loader/mozJSComponentLoader.cpp b/js/src/xpconnect/loader/mozJSComponentLoader.cpp
index 31ccd67af3ab..cd1ba4c36a39 100644
--- a/js/src/xpconnect/loader/mozJSComponentLoader.cpp
+++ b/js/src/xpconnect/loader/mozJSComponentLoader.cpp
@@ -637,8 +637,7 @@ mozJSComponentLoader::LoadModule(nsILocalFile* aComponentFile,
     if (!entry)
         return NS_ERROR_OUT_OF_MEMORY;
 
-    rv = GlobalForLocation(aComponentFile, &entry->global, &entry->location,
-                           nsnull);
+    rv = GlobalForLocation(aComponentFile, &entry->global, &entry->location);
     if (NS_FAILED(rv)) {
 #ifdef DEBUG_shaver
         fprintf(stderr, "GlobalForLocation failed!\n");
@@ -1061,8 +1060,7 @@ mozJSComponentLoader::WriteScript(nsIFastLoadService *flSvc, JSScript *script,
 nsresult
 mozJSComponentLoader::GlobalForLocation(nsILocalFile *aComponent,
                                         JSObject **aGlobal,
-                                        char **aLocation,
-                                        jsval *exception)
+                                        char **aLocation)
 {
     nsresult rv;
 
@@ -1192,15 +1190,6 @@ mozJSComponentLoader::GlobalForLocation(nsILocalFile *aComponent,
         // The script wasn't in the fastload cache, so compile it now.
         LOG(("Slow loading %s\n", nativePath.get()));
 
-        // If |exception| is non-null, then our caller wants to propagate any
-        // exceptions out to our caller. Ensure that the engine doesn't
-        // eagerly report the exception.
-        uint32 oldopts = 0;
-        if (exception) {
-            oldopts = JS_GetOptions(cx);
-            JS_SetOptions(cx, oldopts | JSOPTION_DONT_REPORT_UNCAUGHT);
-        }
-
 #ifdef HAVE_PR_MEMMAP
         PRInt64 fileSize;
         rv = aComponent->GetFileSize(&fileSize);
@@ -1262,19 +1251,8 @@ mozJSComponentLoader::GlobalForLocation(nsILocalFile *aComponent,
                                                    fileHandle, jsPrincipals);
 
         /* JS will close the filehandle after compilation is complete. */
-#endif /* HAVE_PR_MEMMAP */
 
-        // Propagate the exception, if one exists. Also, don't leave the stale
-        // exception on this context.
-        // NB: The caller must stick exception into a rooted slot (probably on
-        // its context) as soon as possible to avoid GC hazards.
-        if (exception) {
-            JS_SetOptions(cx, oldopts);
-            if (!script) {
-                JS_GetPendingException(cx, exception);
-                JS_ClearPendingException(cx);
-            }
-        }
+#endif /* HAVE_PR_MEMMAP */
     }
 
     if (!script) {
@@ -1496,27 +1474,14 @@ mozJSComponentLoader::ImportInto(const nsACString & aLocation,
         if (!newEntry || !mInProgressImports.Put(lfhash, newEntry))
             return NS_ERROR_OUT_OF_MEMORY;
 
-        jsval exception = JSVAL_VOID;
         rv = GlobalForLocation(componentFile, &newEntry->global,
-                               &newEntry->location, &exception);
+                               &newEntry->location);
 
         mInProgressImports.Remove(lfhash);
 
         if (NS_FAILED(rv)) {
             *_retval = nsnull;
-
-            if (!JSVAL_IS_VOID(exception)) {
-                // An exception was thrown during compilation. Propagate it
-                // out to our caller so they can report it.
-                JSContext *callercx;
-                cc->GetJSContext(&callercx);
-                JS_SetPendingException(callercx, exception);
-                cc->SetExceptionWasThrown(PR_TRUE);
-                return NS_OK;
-            }
-
-            // Something failed, but we don't know what it is, guess.
-            return rv;
+            return NS_ERROR_FILE_NOT_FOUND;
         }
 
         mod = newEntry;
diff --git a/js/src/xpconnect/loader/mozJSComponentLoader.h b/js/src/xpconnect/loader/mozJSComponentLoader.h
index 789cba03e0cc..25fdd6010fd6 100644
--- a/js/src/xpconnect/loader/mozJSComponentLoader.h
+++ b/js/src/xpconnect/loader/mozJSComponentLoader.h
@@ -110,8 +110,7 @@ class mozJSComponentLoader : public nsIModuleLoader,
 
     nsresult GlobalForLocation(nsILocalFile *aComponent,
                                JSObject **aGlobal,
-                               char **location,
-                               jsval *exception);
+                               char **location);
 
     nsresult StartFastLoad(nsIFastLoadService *flSvc);
     nsresult ReadScript(nsIFastLoadService *flSvc, const char *nativePath,
diff --git a/js/src/xpconnect/tests/unit/syntax_error.jsm b/js/src/xpconnect/tests/unit/syntax_error.jsm
deleted file mode 100644
index fca785bcdd22..000000000000
--- a/js/src/xpconnect/tests/unit/syntax_error.jsm
+++ /dev/null
@@ -1 +0,0 @@
-bogusjs)(
diff --git a/js/src/xpconnect/tests/unit/test_bug408412.js b/js/src/xpconnect/tests/unit/test_bug408412.js
deleted file mode 100644
index 1e261be48718..000000000000
--- a/js/src/xpconnect/tests/unit/test_bug408412.js
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Mozilla code.
- *
- * The Initial Developer of the Original Code is
- * Mozilla Foundation.
- * Portions created by the Initial Developer are Copyright (C) 2007
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *    Dave Townsend <dtownsend@oxymoronical.com> (original author)
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- 
-function run_test() {
-  var file = do_get_file("js/src/xpconnect/tests/unit/syntax_error.jsm");
-  var ios = Components.classes["@mozilla.org/network/io-service;1"]
-                      .getService(Components.interfaces.nsIIOService);
-  var uri = ios.newFileURI(file);
-
-  try {
-    Components.utils.import(uri.spec);
-    do_throw("Failed to report any error at all");
-  } catch (e) {
-    do_check_neq(/^SyntaxError:/(e + ''), null);
-  }
-}