Why do I keep on receiving error reports when I try to download UE 4.11?

I have been trying to download UE 4.11 for a long time and each time it gives me an error report following a program crash (refer to attached screenshot). At first I was able to make it to 72% but I have tried today and did not get past 0% before I received the error report.

Hi AntonyCrosby,

I’m sorry that you are having an issue with the Epic Games Launcher. In order for us to offer the best support, we have recently modified the process for how Epic Games can help troubleshoot your Launcher issue. Please visit http://help.epicgames.com/ for technical support, here you can find information and solutions for common issues, as well as a contact form if you still need additional assistance. Thanks!