daveVk - 8:39 am on Oct 1, 2012 (gmt 0)

remove the following

accept_terms: {// compound rule - my addition
required: true,
accept: true
},

I think the bold part is triggering the message [docs.jquery.com...]

accept. Makes the element require a certain file extension.

I am not familiar with this plugin, there is probably a rule for checking the text field content that may be preferable to using an alert.