I’ve removed the use of the plug in from a page. You can’t even redirect to another page when you use it in a page. I think it continuously refreshes the page and keeps resending the information in the process, hence the white page.
Just have it run from the sidebar, allows the user to go back to the page they were on when they created the page which is quite a good thing.
I have the same problem.
I really don’t want to add the guest mode and Captcha feature. I suppose I can stop guests from using it since the link will only be in custom menus shown to logged in users.
Apart from this small problem, this plug is near perfect.
Would love to hear of a solution real soon. My site can virtually go live once I have this problem solved.