[kh99]

As borbole said, you really should be asking in the mod threads about the specific problems with modifications.

As nerbert mentioned, the "Unable to add cookies, header already sent" message means that something has created output before the script was intending to, so although the error messages look similar, they might be different problems in each case.

The only one of your 3 errors I can think of a cause for offhand is the second one. If links/links_config.php is a file you've edited, sometimes some junk gets left at the top before the <?php, or if you used something like windows "word" to edit it that can also cause problems. You might want to open that file in a text editor or notepad and see if you can see anything at the top.