I tried several times and I still get the same error. I was having trouble getting the DM installed so I thought it was somehow related to that but after uninstalling and installing DM, the error continues.
Edit: Upon further review, it looks like I'm having trouble donwloading the complete file as every time it ends (it does say 100% completed) the file size varies but is always around half of the listed size.
Edit 2: Used IE instead of Firefox and the complete file was downloaded this time. Processing installation as we speak.