These are the steps to allow permissions for Boston to write to C:\ProgramData

1. To view the [Program Data] folder on your C: drive.

In File Explorer...select [View] then [x] Hidden Items

2. You need to provide "Full Permissions" to

        C:\ProgramData\FactEngine\

    or   C:\ProgramData\FactEngine\Boston\6.6.0.0\

3. In Windows Explorer. Go to C: drive and show hidden folders
4. Navigate to C:\ProgramData\FactEngine\
5. Right click...select [Permissions] then [Security]
6. Click on [Edit]
7. Click on Users
8. Click on 'Full Control' and save