Same here, but I keep getting an error at 60% (Unknown bundle setup error)
The issue with cab5.cab has been fixed, i can confirm the launcher now downloads it
Same happens to me as well, installer is stuck and do not download anything (checked this in task monitor and in network status).
First beta installed fine, after update I am stuck.
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Yep, I tried complete reinstall as well now, same result.
Same Errors here. Stuck Downloader.
What is the file size of your launcher.exe?
It´s 1245kb
Can you post the contents of your KCD_Beta_Access_[datestamp].log file, using something like www.pastebin.com? (file is located in your [username]/appdata/local/temp/ folder)
Any one of you having the issue where the launcher doesnât download anything.
Setup_20160316092218_Failed.txt
[1D64:1BAC][2016-03-16T09:22:18]i001: Burn v3.10.2.2715, Windows v10.0 (Build 10586: Service Pack 0), path: C:\Users\Oliver\AppData\Local\Temp\2565038191554623be65c0d32cb4f5a6\e7238f360b234f6c89239434f30532b2.tmp
[1D64:1BAC][2016-03-16T09:22:18]i000: Initializing string variable âInstallationFolderâ to value â[ProgramFilesFolder]Warhorse Studios\KCD Beta Accessâ
[1D64:1BAC][2016-03-16T09:22:18]i009: Command Line: â-burn.embedded bpe_7432 f69fe43f6fab44c9a83105b1a38c5626 7432â
[1D64:1BAC][2016-03-16T09:22:18]i000: Setting string variable âWixBundleOriginalSourceâ to value âC:\Users\Oliver\AppData\Local\Temp\2565038191554623be65c0d32cb4f5a6\e7238f360b234f6c89239434f30532b2.tmpâ
[1D64:1BAC][2016-03-16T09:22:18]i000: Setting string variable âWixBundleOriginalSourceFolderâ to value âC:\Users\Oliver\AppData\Local\Temp\2565038191554623be65c0d32cb4f5a6â
[1D64:1BAC][2016-03-16T09:22:18]e000: Error 0x80070015: Could not find drive with most free space.
[1D64:1BAC][2016-03-16T09:22:18]e000: Error 0x80070015: Failed to calculate working folder for large data to ensure it exists.
[1D64:1BAC][2016-03-16T09:22:18]e000: Error 0x80070015: Failed to create working folder for large data.
[1D64:1BAC][2016-03-16T09:22:18]e000: Error 0x80070015: Failed to initialize core.
[1D64:1BAC][2016-03-16T09:22:18]e000: Error 0x80070015: Could not find drive with most free space.
[1D64:1BAC][2016-03-16T09:22:18]e000: Error 0x80070015: Failed to calculate the working folder for large data to remove it.
same here launcher update start -> nothingâŚ
Install path is D:\Program Files (x86)\Warhorse Studios\KCD_Beta
and yes there is enough space on this drive.
greetings 
Okay, now do the same with the log file stored here: C:\Users\patri\AppData\Local\Temp\KCD_Beta_Access_20160316081545_001_KCD.log
I have noticed that when downloading the files for the update it stores them in a temporary folder on a different drive than the one that I am using. Not that you would have to have multiple drives, but do you?
I have 6 Drives in my PC.
Downloader (1245kb) is on C.
Installation should be done on Drive E.
At least this worked yesterday for me, when i installed KCD the first time.
from what I can tell i think it actually installed properly, I donât see any obvious problems, though Iâm no expert. Do you have gamelauncher.exe located in E:\Kingdom Come Deliverance\ ?
Thats the Problem. There is no reaction from the Launcher/Downloading. It doesnt work.
Showing only this for long times. Nothing more:
[URL=http://www.directupload.net/file/d/4295/f3s5l56w_png.htm]
[/URL]
[URL=http://www.directupload.net/file/d/4295/ase9ok7i_png.htm]
[/URL]
There are no Files in the Installaion Directory on Drive E.
Its empty.
Same Behaviour for Patch installation and Reinstallation 
Hm, okay try emptying your appdata/local/temp folder and try it again (also I donât speak german, not sure what itâs saying in the image)
It says: Wait, Installation is running.
Temp Folder cleaned. Problem not solved.
buhaaaa⌠Such a crap.
So ⌠i think i´ll have to wait if anyone has a good idea.
At least, thank you for your help RednoWCirabrab
Or maybe the Dev´s will take care of this
Restart your computer, then empty the temp folder, then run the launcher again
Other than that i am clueless haha