om.vmware.horizon.configurator.exception.VMException: VM.INVALID_ROOT_CA.11 at com.vmware.horizon.configurator.exception.VMException.INVALID_ROOT_CA(VMException.java:299) at
I'm thinking that it does not like your root_ca cert. Is it a wildcard cert?
Also, what if you test your configuration by changing your DNS to your gateway and removing the load balancer temporarily? Or is that what you had before you attempted to use the load balancers?