I've been trying to put a paypal donate button in a post on my website. The code embeds the button fine (I'm using the ParseHTML addon). However when I click on it, it takes me to a message saying "Security error occurred. Please press back, refresh the page, and try again." I've looked around this website at various other posts that get the same error, but I don't really understand how anyone actually has fixed it. Any help would be greatly appreciated.