A problem is "Shared Files" folder is not uploaded to GitHub repository because it is an empty folder.
This can cause an error when compiling.
What I can think of to solve it are:
1. Add a dummy text file to the folder. This file need to be deleted after creating a new project from IDE.
2. Attach an additional b4xtemplate file (with Shared Files folder) to the repo for user to download.
3. Publish this b4xtemplate as Release inside a zip file.
4. Alternative, comment out the #CustomBuildAction for RoboCopy.exe. Inform user to manually create the Shared Files folder if necessary.