The Integration Wizard has reported me the following error: "Cannot setup BCGPAppWizard***. Error code = 80131500". How do I fix this?

This is a Visual Studio issue: probably you didn't restart your machine after the recent upgrade, or some Visual Studio components weren't properly installed. We suggest checking your Visual Studio installation first. Alternately, you may try to install the Application Wizard manually by double-clicking the BCGPAppWizard****.vsix file.  This.vsix file is located in the BCGPAppWizard2017 folder.