Instant Clone - vCenter Server list empty

Hi,

After upgrading from View6 to View7, when I try to create a new Instant Clone pool, the list of vCenter server is empty (it is not the case for the other types of pool like "View Composer linked clones").

I've selected "Automated desktop pool" and Floating in the previous screens and the "Instant Clones domain account" fields are filled with an AD credentials with the right permissions.

Any idea?

Thanks for your help!