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prior to the exit, add a couple of more print_r statements and post the results:



print_r($cat_series_link_array);
print_r($_POST);
print_r($sql_data_array);
...

#1 - have you modified the categories_description table to add your new field? something like:



alter table categories_description
add cat_series_link longtext;


#2 i think your code...