It appears after the Xmas update BGrade compiles but does not function. I don't see any errors in the console when it's attempting to be used.
Thanks!
BGrade non-functional on Xmas update.
Same issue here
as above
same problem
same here
This will be fixed with the next oxide update coming soon.
For those that have sandbox disabled on there server here's a harmony mod that fixes it without restart:
FixOnEntityBuilt.cs