After review the files your should take a look to links_popular_links.php The header contains wrong version descriptions and in line 58 is an alt tag missing after /images/popular-c.gif\ witch was in your last update.
I have a question about your directory structure for this modification. I put he language files in the UBBt language directory so I have to edit the line
require ("languages/{$myprefs['language']}/links.php"); to require ("./languages/{$myprefs['language']}/links.php");
in some files. There should be a note in the installation description about the directory location.
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