Index: wp-admin/includes/post.php
===================================================================
--- wp-admin/includes/post.php	(revision 10853)
+++ wp-admin/includes/post.php	(working copy)
@@ -1354,7 +1354,7 @@
 
 <?php
 	if ( $concatenate_scripts )
-		echo "<script type='text/javascript' src='$baseurl/wp-tinymce.php?c=$zip&ver=$ver'></script>\n";
+		echo "<script type='text/javascript' src='$baseurl/wp-tinymce.php?c=$zip&amp;ver=$ver'></script>\n";
 	else
 		echo "<script type='text/javascript' src='$baseurl/tiny_mce.js?ver=$ver'></script>\n";