Error 000535 when using Sort Coded Value Domain tool

[JessicaGooch1]

Hi-

I am trying to reorder coded values in a domain in a geodatabase and I am currently getting ERROR 000535: Workspace does not exist when using the Sort Coded Value Domain tool.  Any ideas how to get this to work?

Thanks!
-Jessica

[DannyEngle]

Same issue with 10.2.1, disabled background and resolves