Upon launching Adobe After Effects, the DUIK plugin is not available. The plugin needs to be activated. Follow the steps below to activate it for use.
Step-by-step guide
With Adobe After Effects CC launched, choose "Window" File menu and click on "DUIK.jsx"
In the next window, read the directions and then proceed by clicking on "Open General Preferences"
In this window (as the instructions state), check the box next to "Allow Scripts to write files..."
Click OK and then proceed to use the DUIK tools
NOTE: If the tools do not load, close the DUIK tool panel window and then choose it again from the "Window" file menu
If on launch the plugin complains about a update being available, just click ok and the panel will still load