This is likely not an issue with the Admin Assistant, but an issue with network browsing on your machine. First, can you please let us know what version of Windows you are running on the machine where you installed the EventSentry Admin Assistant?
Also, can you please open a command prompt on the computer and run the following command
I'm expecting that you would get the same error message as in the admin assistant.
I suspect that there may another service not started that is required. Ideally you could run the following command from the command prompt
sc query > services.txt
and attach the services.txt file.