Please first of all try to clear your browser cache completely. Mostly it is a viewing problem.
I do not get a clear sight on what exactly your steps are so my questions:
are you using a real ctrlX CORE or a ctrlX COREvirtual?
What do mean with restarting ctrlX WORKS? ctrlX WORKS is the software package installable on your PC. Including PLC, IO and drive engineering as well as virtual controls.
Are you using any stored links in your browser? E.g.When working with different controls the link "https://192.168.1.2/motion/axis-landing/setup" can only be accessed when the motion is installed, if not 404 will be shown. Same for other apps.
Could you please add a screenshot of where/when you get the error?
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