I went to my C:\Mach3 folder to grab a copy of my .xml file and noticed that there were a bunch of "Profile Name".xb# files that were recently created.  I checked and found that each time Mach3 is loaded that a new .xb file is created.  I'm up to 15 new files at this point.

What's up with that? 

I don't know for sure but i think this is part of art's new auto xml backup system. I think you can expect to see a total of 21 of those as time goes on.  . X(xml)B(backup)

Chad

Yup it is a backup of your XML