Hi Jip,
The file structure that you should have in the actions folder is like this (there are some .old.php files in the image that are no longer in use).
[attachment=0]2016-05-27_14-36-12.png[/attachment]
The error is more confusing, Please will you check the /administrator/components/com_chronoforms5/chronoforms/actions/gateway_mollie_gh/include/ideal.class.php file - in my version I see this at the beginning
if ( class_exists( 'iDEAL_Payment' ) ) {
return;
}
class iDEAL_Payment
{
This is there to stop the class being redeclared so you shouldn't get the error. Also I'm no immediately sure why the class would be redeclared.
You could edit the file /administrator/components/com_chronoforms5/chronoforms/actions/gateway_mollie_submit_gh/gateway_mollie_submit_gh.php There are two lines like this
include $this->base_dir.'/gateway_mollie_gh/include/ideal.class.php';
around 111 and 314. Replacing include with include_once might prevent the problem.
I've not seen this error before - though it is a while since I used this action on a client site.
Bob