Problems with Media gallery
The solution reported in the issue report is to replace every occurrence of unset($form[$id]) with $form[$id] = array('#language' =&gt; NULL) in all the module file; you just search for the first string, and you replace it with the second string. The module file is media_gallery.module.
Who suggests the fix doesn't report in which line you find unset($form[$id]) because you probably find more occurrences of that string, and the user doesn't want to make a list of all the lines containing that string. It is also useless to make such list, as an editor can easily make a search and replace for the strings listed in the issue report.