Detailed Description and Symptoms
U0011610 Host login failed due to an already existing but wrong configured host '<agent name>' in Client 0. Host must be deleted and created manually.
This error occurs when attempting to start the Agent.
This error is fairly self-explanatory. Basically, you have already configured an RA host in the HOSTS folder with this same name. Perhaps you had a failed previous install, or an old agent.
Go into Client 0--> HOSTS folder. Delete the previously-created agent, and then create a new one manually with the correct name.