V2.56.1

So I'm using the machine all morning and all is well.

I resume this afternoon and CV is gone - disappeared - ceased to be - awol. Jerky toolpaths enough to shake the thing to bits. Not only that but I'm getting limits going off all over the place. 

I look everywhere for what's changed. Can't find anything - so then I give up and just do a re-install. Same profile though and hey presto everything's immediately cool again 

Is it me or is Mach getting a little Kellogs these days?