Just downloaded the latest version V0.101 because the last one expired and I am getting strange behavior. At first it seemed to work ok but I noticed I got two different Speed and Feed results for the same settings. Then I started getting error messages from .net framework
when launching the program (unhandled exception has occurred ). Rebood didn't clear the issue. Then I noticed the SFM for aluminum 6061 was off compared to the online tool 800 and something vs 500 something on line. Too late to do much more tonight.