added greater precision to $_FILE upload errors
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 0f6c677..a102cc9 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -95,6 +95,7 @@
     <li>Moved part of the userguide menu javascript to an external file.</li>

 	<li>Modified variable names in _ci_load() method of Loader class to avoid conflicts with view variables.</li>

 	<li>Modified prep_for_form() in the Validation class to accept arrays, adding support for POST array validation (via callbacks only)</li>

+	<li>Modified Upload class $_FILE error messages to be more precise.</li>

     <li>Changed the behaviour of custom callbacks so that they no longer trigger the &quot;required&quot; rule. </li>

     <li>Changed the behaviour of variables submitted to the where() clause with no values to auto set &quot;IS NULL&quot;</li>

 	<li>Strengthened the Encryption library to help protect against man in the middle attacks when MCRYPT_MODE_CBC mode is used.</li>