When asked to enter the code below before downloading, the page only shows a boxed x where the code should be. Is this a problem with my internet secuity or with the link?
Ok, thanks for trying my suggestion. What security are you using? Sometimes your security will block the code boxes when that happens to me I just pause the AV and the Firewall for a short period of time and try it again. Don't forget to re-start it.
I presume you mean the point where you should see a code as in the image George posted below
This code is an image and I am assuming that you were using Internet Explorer and when you installed Firefox and Chrome you allowed them to import the settings from IE.
There a two options in your browser which may stop this being displayed: