Index: includes/install.core.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/install.core.inc,v
retrieving revision 1.34
diff -u -p -r1.34 install.core.inc
--- includes/install.core.inc	24 Sep 2010 21:36:22 -0000	1.34
+++ includes/install.core.inc	25 Sep 2010 16:41:07 -0000
@@ -83,7 +83,7 @@ function install_drupal($settings = arra
     // When an installation error occurs, either send the error to the web
     // browser or pass on the exception so the calling script can use it.
     if ($install_state['interactive']) {
-      install_display_output($e->getMessage(), $install_state);
+      install_display_output('<pre>'. $e->getMessage() . '</pre><pre>' . $e->getTraceAsString() . '</pre>', $install_state);
     }
     else {
       throw $e;