Here are the answers to your questions:

What controller are you trying to program?
- Mamba Monster Max (F310C)

What version of software is on the controller?
- V1.24 (Beta)

What version of software do you have on the computer?
- Castle Link version 3.251

Have you ever connected the Field Programmer to the computer?
- Yes. No problems encountered when using Castle Link software to set the MMM ESC via Field Link. The problem only happens when using Field Link powered by battery via MMM ESC.