I have just upgraded to the latest 0.9.13 build on an x64 windows 10 Pro machine and stumbled upon a little quirk. I have 2 saved machine configs that were saved from the previous version that loaded and saved back to the controller every time but now after the upgrade one now refuse to write back to the machine giving error 10.
After a little bit of hair removing I think I found out why. Maybe a possible feature as apple and microsoft would call it but in the non saving config I have soft limits and homing both enabled for my (K40 Laser clone).
If soft limits ($20) is enabled before homing ($22) is enabled it will fail to write and since the config file is saved in order it always fails.
If I manually enable homing ($22) then write the settings to the device only then can I the enable soft limits ($20). I don`t know if this is because I have a custom complied version of grbl 1.1 that I built from the current git-hub code or it is a feature that has slipped in thru the latest LB. I think maybe the latter option here because it worked perfectly without problems on the previous build.