Had the same problem and found this post, but still no solution to the issue.
What did work is:
Be sure all you clients are updated to the latest build of vSphere Client.
The Client download link on thevSphere webpage can point to an older build of the Client.
So download the latest build from VMware.com and replace this "VMware-viclient.exe" with the one you downloaded. (rename needed)
Located @ C:\ProgramData\VMware\VMware VirtualCenter\docRoot\client
This resolved the issue in our enviorment.
I hope this helps some people resolve the same thing...