The following error messages can be seen in the PCF Ops Manager installation dashboard when you click "Apply Changes":
Cannot find availability zone <cluster_name>: <resource_pool_name>
When deploying the Director from Ops Manager, it is unable to find clusters for availability zones when that cluster is nested inside a folder in vSphere under a datacenter. It can only find clusters in the root of the data center.
PCF 1.6.x (Ops Manager 1.6.x) does not support folder in a root of a cluster in vSphere. The cluster needs to be moved to the root of the data center. Alternatively, upgrade or install PCF 1.7.x (Ops Manager 1.7.x) or greater which supports the folder structure.