Problem with 'Go button'

Hi,
I’m having trouble with the URL links for the ‘Go button’ in Visual Composer. I can insert the exact same link in a regular button, and it works great. But if I use it with the ‘Go button’ (which happens to be a much nicer looking button), it just says the file is not found. I’m wondering if maybe the url needs to be entered differently for this element?
Thanks,
Karen