Hi,
I have just installed a test copy of 4images on a FC4 PHP5 / MySQL 5.0.16 machine and I see this error: Unknown column 'i.user_id' in 'on clause'
The problem is caused by the SQL in the following files:
categories.php
details.php
includes/functions.php
index.php
lightbox.php
search.php
(I found these with grep -ilr 'SELECT i.image_id, i.cat_id, i.user_id, i.image_name, i.image_description, i.image_keywords, i.image_date, i.image_active, i.image_thumb_file, i.image_download_url' *)
Instead of
$sql = "SELECT i.image_id, i.cat_id, i.user_id, i.image_name, i.image_description, i.image_keywords, i.image_date, i.image_active, i.image_media_file, i.image_thumb_file, i.image_download_url, i.image_allow_comments, i.image_comments, i.image_downloads, i.image_votes, i.image_rating, i.image_hits".$additional_sql.", c.cat_name".get_user_table_field(", u.", "user_name")."
FROM ".IMAGES_TABLE." i, ".CATEGORIES_TABLE." c
LEFT JOIN ".USERS_TABLE." u ON (".get_user_table_field("u.", "user_id")." = i.user_id)
WHERE i.image_active = 1
$sql_where_query
AND c.cat_id = i.cat_id AND i.cat_id IN ($cat_id_sql)
the code should be
$sql = "SELECT i.image_id, i.cat_id, i.user_id, i.image_name, i.image_description, i.image_keywords, i.image_date, i.image_active, i.image_media_file, i.image_thumb_file, i.image_download_url, i.image_allow_comments, i.image_comments, i.image_downloads, i.image_votes, i.image_rating, i.image_hits".$additional_sql.", c.cat_name".get_user_table_field(", u.", "user_name")."
FROM ".IMAGES_TABLE." i INNER JOIN ".CATEGORIES_TABLE." c ON i.cat_id=c.cat_id
LEFT JOIN ".USERS_TABLE." u ON (".get_user_table_field("u.", "user_id")." = i.user_id)
WHERE i.image_active = 1
$sql_where_query
AND i.cat_id IN ($cat_id_sql)
... which would be the normal syntax for a join...
Good luck