Has anyone run into a situation where the software tool worked fine, then would read, but not write? I have tried reinstalling program, delete/reinstall port, remove bike battery, new cable, etc. It connects and will read the file, then write box goes grey. Bike with is Biktrix Juggernaut ultra Duo with Bafang Ultra M620. It's a few weeks old. Tuning was coming along nicely until this happened. Last change was on Throttle Handle page, switched Speed Mode from Speed to Current. Happy Holidays all.