Sorry to hear this!
If it gets stuck without downloading anything, that could be security software interference.
Could you see whether this support article helps?
We should have digital signing taken care of in time for our initial beta release. Apologies for the inconvenience until then - we’re prioritizing tasks as best we can. 
Very strange.
Sorry for the inconvenience, but could you try deleting those files and downloading them again?
Thanks.
Unfortunately your screenshot suggests launcher-log.txt is 0 KB, and thus it is unlikely to contain much useful information - it looks suspiciously empty. 
Could you please check this support article and post the other file if it isn’t blank?
This is the problem being reported by the log files;
[INFO] Tue Apr 2 12:40:42 2019 - Downloaded data is completely invalid.
It’s not an issue we’ve encountered before, so I’m trying to see if one of our service providers can get us more information as they may be more familiar with this particular issue.
The issue can’t be on our end - as if it was it would either affect everybody, or at least affect anyone connecting to a particular server. I’m not seeing any other reports of this.
I’d be curious if creating a new Admin account, logging in on it, and trying again on that profile would be successful. From what I can see either the data is corrupted by the time it reaches your computer, or something on the computer is tampering with it.
A Clean Boot would be nearly as helpful and probably far less inconvenient.
I’ve heard back from our service provider.
This error is related to either proxy settings or firewalls interfering with the download. Can I please ask whether you use a proxy or VPN, and which firewall you have installed?
As our last post was two weeks ago and we haven’t heard back from you, I’m going to assume this issue has been resolved. Please feel free to create a new thread if that’s not the case.
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