make external axis on robot studio

h.esk60

Hi, 
I make mechanism for external axis in RS version 5.06 but when i want to make a system include robot and my external aixs i have bellow error .

No media or cfg file found . the system could not be created.

While when i add one of abb external axis ,it works as well.
How can i load media of cfg file for my external that make it by my self .

Would you please help what can i do ?

Many thanks and best regards.