Hi
Could you run the setup.exe (BT) as "setup.exe LPUSBHUBWA=TRUE" from command prompt? After install, cold boot is required. This is a workaround if the BT module is managed by EHCI USB controller. I suspect that is the case in your case. Meanwhile, could you clarify whether you are using 1406 or earlier release? It seems others see issues with 1406 installer. Is that not your case?
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Disclaimer: Not speaking for my employer