Error - java.rmi.UnmarshalException: unrecognized method hash

[Rob_C]

Tried to re-install MirrorSync 5.0005 (only copy of Version 5 I had in my files) after trying to install MirrorSync Version 6 and realizing it wasn't compatible with FMS16. I uninstalled Version 6, installed Version 5 (also updated Java to latest version while I was at it) and am now getting a message when trying to login to MirrorSync - "An unexpected error occurred while logging in. java.rmi.ServerException: RemoveException occurred in server thread; nested exception is: java.rmi.UnmarshalException: unrecognized method hash: method not supported by remote object"

 

Any help would be much appreciated. Thanks.

[Rob_C]

This issue was resolved by installing FMS18 on a new server.