Hi guys,is the number of columns which can be displayed limited? because I have more than 20 and when I try to add 21, I get thisI thought it was the field but I tried to interchnge still same.
The fields, where the configuration is saved - in database table yourprefix_grids, are strings of a certain size. Therefore if you have a lot of columns the fields are filled up. If you have access to the database, you should be able to enlarge them.
