when i tried to change some details shown, i get a white screen in the contact-admin panel (no fields or anything else)
This is an error that has already been fixed. I can not check right now the version that was fixed. If you have an older version than 2009.1 please update your Elxis installation. On Elxis 2009.2 the related line in as follows: $usrfields = explode("|", $extrafields); if (is_array($usrfields) && (count($usrfields) > 0)) {Which is absolutely correct.Your fix is wrong as you convert array to string.