Hi again Serellyn,
Sorry for the delay! I have been trying to reproduce your issue, and I think i now have figured it out.
Your installation is constantly failing on the exact same temporary file not being able to be created, on your system, that file is trying to go here:-
E:\Installed Applications\Unreal Engine 4\Unreal Engine\Launcher\PatchStaging\UE_4.1Production-Windows\Install\Engine\Plugins\Runtime\ExampleDeviceProfileSelector\Intermediate\Build\Win64\Dynamic\UE4Editor\Development\UE4Editor-ExampleDeviceProfileSelector.lib
It’s a long path - 260 characters. Windows support a path length up to 260 characters, so it would seem just 1 character too many. Harsh luck :(. Unfortunately, this means that your only fix is to uninstall unreal engine from the control panel and reinstall to a location that is not so long. It looks like you picked:-
E:\Installed Applications\Unreal Engine 4
Which ended up as
E:\Installed Applications\Unreal Engine 4\Unreal Engine
Perhaps you could reinstall to chose:
E:\Installed Applications
The installer will automatically create the “Unreal Engine” folder inside that.
I think this is the first time that this issue has come up! We will be sure to make adjustments to the install process to help users realise when this is a problem, and also reduce it.
Tip:-
If you backup your staging folder
E:\Installed Applications\Unreal Engine 4\Unreal Engine\Launcher\PatchStaging
And place it to the new location afterwards
E:\Installed Applications\Unreal Engine\Launcher\PatchStaging
You wont have to download the whole thing from the start, assuming you find some files in there.
I hope this helps, and sorry again for this inconvenience!
Leigh