Problems and Solutions

iOS simulator - error: failed to attach to process ID 0
*From the iOS Simulator menu, click "Reset Content and Settings
*Close iOS Simulator
*From the Xcode menu, click "Window->Organizer"
*Select the app, and click "Delete" next to Derived Data

Reset icons on windows
http://superuser.com/questions/499078/refresh-icon-cache-without-rebooting

Windows short path file names
Sometimes windows fails to create short path names for directories. DK requires short path names. http://superuser.com/questions/681330/how-to-force-short-name-8dot3-generation

fsutil 8dot3name query
fsutil behavior set disable8dot3 0
fsutil file setshortname "Program Files" PROGRA~1
fsutil file setshortname "Program Files (x86)" PROGRA~2
dir /X

You may need "lockhunter" if the Progrm Files folders are locked. https://lockhunter.com/

Microsoft Visual Studio 2015 Update 3 fails to install
If Visual Studio fails to install, you may need to install Microsoft .NET framework 4.6.2 first. https://www.microsoft.com/en-us/download/details.aspx?id=53344
NOTE: You need to uninstall the failed components first before attempting a reinstall.

Linux or Mac says "No CMAKE_CXX_COMPILER could be found"
Open terminal, and enter these commands.
sudo apt-get update
sudo apt-get install build-essential