After trying many different things to get v0.57 to install and run, I replaced the SSD on my machine and did a clean Windows 10 Pro install. I applied all updates and the VS Build Tool to install the C++ compiler needed.
Note: This is the same hardware my P3ROC game runs just fine on v0.54. I took a clean image backup so I can try different things and revert to square one without any cross-contamination.
Since v0.57 is the long-term stable release, I'd like to help identify whatever needs fixing so others can have a straightforward process that works.
My first attempt (output attached) failed on the mpf-mc install. My 2nd attempt (also attached) started with me upgrading pip and installing setuptools. That installation succeeded but "mpf both" failed due to missing modules. It also generates annoying warning messages re: pkg_resources
As I said, I'll be glad to re-run the install with your suggestions from scratch until it runs clean.
Steve