Retired Documentation: You are using the documentation for version 1.7.3 which was retired in 2013. Go here for the latest version documentation or check here for your available upgrades to the latest version.
Update Notes for Version 1.5.1
ExpressionEngine 1.5.1 includes a number of new features and updates. Reviewing the notes below will help you transition to 1.5.1 with as little effort as possible.
CP Image Additions
A new image was added in 1.5.1 for a Quick Link edit button at the top of the Control Panel pages. The file is located at themes/cp_global_images/edit_quicklinks.png. Simply copy it over to the same folder on your site.
Profile Theme Updates
Version 1.5.1 has some changes in the member theme file (./themes/profile_themes/default/profile_theme.php), so either replace that file or if you have a customized the Member Profile theme add the following code.
Delete PM Bulletin
Bulletin part of the theme after the bulletin's date:
{if can_delete_bulletin}
<span class='defaultBold'>{lang:delete_bulletin}: <a href='{path:delete_bulletin}' onclick='if(!confirm("{lang:delete_bulletin_popup}")) return false;'>{lang:yes}</a></span><br />
{/if}
Bulletin Board Message
Bulletin Board right at the top before everything else:
{if message}
<div class='tableCellOne'><div class='success'>{include:message}</div></div>
{/if}
Language Additions
ExpressionEngine 1.5.1 has a number of language file additions. To assist translators in updating their language packs, a language notes text file has been provided. This text file lists all of the new language keys, separated by the each language file that contains changes. To update your language pack, you can download this text file, make the changes, and simply copy the new keys to the appropriate language files.