Yes, there is a limit to the number of fields you can have in a group. This is determined by your server, not the plugin, so I can’t tell you what it is. If the page is caming back blank, that means it’s hitting the limit.
Break your fields up into smaller groups of fields and the problem will go away.
You should be able to accomplish this by first creating all the field groups you need, then selecting the fields and using the “with selected” control to assign the fields to their groups.
OK thanks. That makes sense in one way as when I was initially creating the fields this was happening when I added a new one, but when I added it as a new fieldset it worked.
However, it is letting me add a new field to this fieldset, but it’s not letting me edit an existing field in it – I just wanted to change the name of the field but it gave me the blank screen when I tried to save the change?
OK, if the field group is small, then some other error is popping up. You’ll need to have a look at your php error log to see what is causing the problem.
You can probably use the plugin debugging log for this, enable plugin debugging, clear the log, then attemtp to make your change. Check the log right after to see if any problems are coming in there.