Hello Goran

Having a column that doesn't have a header always caused a problem with at least one segment of the plugin, but we've included this message quite some time ago. When did you update the plugin if this only started happening?

As mentioned in the other ticket:

To revert the behavior, please go to file wp-content/plugins/wpdatatables/source/class.wdtconfigcontroller.php and on line 635 you will find this:

try {
            foreach ($dataSourceColumnsHeaders as $dataSourceColumnsHeader)
                if ($dataSourceColumnsHeader == '') throw new WDTException(__('One or more columns doesn\'t have a header. Please enter headers for all columns in order to proceed.'));
        } catch (WDTException $exception) {
            die($exception);
        }

Comment those lines, like this:

//        try {
//            foreach ($dataSourceColumnsHeaders as $dataSourceColumnsHeader)
//                if ($dataSourceColumnsHeader == '') throw new WDTException(__('One or more columns doesn\'t have a header. Please enter headers for all columns in order to proceed.'));
//        } catch (WDTException $exception) {
//            die($exception);
//        }

And it should work as it used to.

However, we will not revert this to an earlier state, so either modify the files used to generate the table so every column contains a header, or comment these lines of code each time the plugin is updated.

Column headers need to be saved in the database, and having an empty header will cause issues with the plugin (sorting, filtering, search, conditional formatting, foreign keys, etc), so it's safer to simply add the column headers to all your columns.

Hi again Goran

Can you please send me the file that's used for generating the table along with admin wp-admin credentials, and the ID of the table? Just make sure to enable the "PRIVATE" response.

Also, I'll need access to your database, to see how the table is structured, so please provide me with phpMyAdmin or cPanel credentials also.