I have created a button and assigned a Send Email action to it. I then selected “Click to edit” and entered the email address in the text entry box. After exporting the project to HTML5, when I click the button, it attempts to open a web page with the email address appended and gives a File Not Found 404 error. I think there must be an additional configuration step I am missing (to enter a Subject for the email, etc.), but I cannot seem to find the settings dialog–all I get when I select “Click to edit” is a single text entry box. Please advise.