If your WP admin dashboard is filled up with deprecated warning, then try the following steps to remove the warning:

(Deprecated: Assigning the return value of new by reference is deprecated in /home/.../wp-includes/class-simplepie.php on line 738)

NOTE: The error is being caused by a Wordpress class (class-simplepie.php) that uses a function deprecated in php 5.3.x.
DAP is not causing the warning.

You can try these steps to suppress the error:

1. Add the following lines to your wp-config.php to suppress deprecated warning:
error_reporting(E_ALL & ~ (E_STRICT|E_NOTICE));

2. If step 1 does not help, try to de-activate all plugins except dap live links and see if the error goes away. If yes, re-activate plugins one-at-a-time to see if another plugin is causing it.
You can also try to switch your WP theme temporarily and see if the warning in your WP admin dashboard goes away.

If step 2 also does not help, then pls contact your webhost. Maybe a global php setting in your webhost/server's php config is making these warning show up and it could be turned off at server level.