It looks like you are using Windows 10 which I am not actually familiar with as Windows 7 works for me.
All your files are there - I compared them with mine although I have a slightly older version of Manager as I pre-new summary page look!
- Cause one: - Microsoft .net is not installed. Run windows update and install all your windows updates and check in add/remove programs whether you have Microsoft .net installed - otherwise manually install from microsoft website
- Have a look at this topic and see if changing the settings in IE will fix the issue as Manager is dependent on some settings in IE even though you don’t connect to the Internet
Cannot Add Business
3. It may be some Windows 10 issue that I have not heard about yet. But I suspect the above two issues are the cause.
Hope something here helps - if all else fails, then ask Lubos as he can run a trace on the program and see whats going on.