Enabling a component that's already been enabled gives an incorrect error message

It says 'there is no components/disabled' directory but there actually is.

~/Desktop/xyz % ahn enable component sandbox      
There is no components/disabled directory!

Usage:
   ahn create /path/to/directory
   ahn start [daemon] [/path/to/directory]
   ahn version|-v|--v|-version|--version
   ahn help|-h|--h|--help|-help
   
   ahn  enable component COMPONENT_NAME
   ahn disable component COMPONENT_NAME
   ahn  create component COMPONENT_NAME