s2Member Disables Modal Contact Link

[newToo]

I have a link on a page that launches a contact form in a modal. The modal works well when I have s2Member disabled. But once I enable it I get a basic.js error and the modal no longer works. Any suggestions on how to fix this?

error only appears when s2Member is enabled.

Message: Object doesn't support this property or method
Line: 18
Char: 3
Code: 0
URI: http://.../library/js/basic.js