Download zip wont open

Was hoping to try out the full beta.
Windows 7 on bootcamp el capitan
download zip wont open...says file is invalid.
Any advice anyone
thanks
s

There are several links, as a setup file or as just a zipped folder, in:
http://www.expresii.com/download.html

I just checked the links, all the links worked for me, e.g.:
http://bit.ly/1lIoihr

It's version 2016.04.03

ah... Now I think I know why you experienced difficulty in getting the right file content. You probably was downloading while I was updating the files. I'm on a slow network right now so it took a while (sometimes in terms of few hours) for the update to finish. Please try again at a later time. Sorry for the inconvenience. Thanks for reporting!