Hi @pinkoto, sorry to hear about your issues. I assume you already tried to compile the WPF application via the command line following our guide @ https://tobiitech.github.io/interaction-library-docs/wpf/html/gettingstarted.html ?
What was the output when you used this approach? The error code 0x8007007E is very strange as this appears to be connected to a Windows printer issue.
Looking at your gitHub repo however, it seems you are missing several DLL’s that are present in the ‘lib’ folder of the Interaction Library ZIP file which
you can download @ https://developer.tobii.com/product-integration/interaction-library/getting-started/ (Windows)
Make sure you have the Lib folder properly populated and let us know the results please, thanks.