Trying to add a node and getting compatible issue

Hello, 

Aris 9.8.3 just stopped and we do not know why.  There are no nodes listed so I tried to add anode using the ACC.

I used the follwoing command:

add node localhost localhost:31381 Clous g3h31m

I get this error:

This could indicate that the versions of agent and ACC differ and are incompatible.

Does anybody know what this can mean?