I get a blank (ie "pure white") screen when opening the Scan Manager and Virtual Machine Alignment screens within vSphere.
All other tabs within VSC are functioning properly. I can confirm I can browse to the netapp web from my client machine by navigating to https://hostname:8143. Between this an the fact all other tabs are working, I do not think this is a firewall issue.
Any suggestions on where to look? I've tried this on multiple client machines to the same result.
The only time i've seen this is when a firewall or antivirus is causing issues. I know you mentioned this doesn't seem firewall related to you however trying to load this locally from the host VSC is installed on would be a good test to verify.
I'm having this same issue with a fresh 4.2.1 install. On any other view, like datastores and clusters view, I can access the netapp datastore provisioning wizard, but on anything where I need the full interface, Hosts and Clusters clicking on the netapp tab, or switching the view to View > Solutions and Applications > Netapp, I get an hourglass for about a minute and the screen stays completely white.