Can you please check if the file you are trying to reference is blocked by windows? You can right click on it and then select Properties. If you see the Unblock checkbox, try checking it and referencing the file again. I have attached a picture to demonstrate this.
If that doesn't work, can you please check the following article and see if it provides any solution: https://docs.microsoft.com/en-us/visualstudio/ide/troubleshooting-broken-references
If the aforementioned solutions don't work, can you specify the way in which you have installed Dev Craft Complete for WPF. Is it from a msi file, zip file or from a NuGet package?
Please follow up if the issue continues to exist.
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