After upgrade vCenter 5.5 U2, inventory is empty

Hi,

I had yesterday upgrade my vCenter 5.1 to vCenter 5.5 U2.

I use SImple Install and no error displaying.

I cannot login with vSphere Client:

I can login with Web Client, but Inventory is empty and i have this error:

impossible de créer l'objet géré pour - urn:vmomi:TaskManager:TaskManager:FDA956DA-E433-4AD1-9DFC-94E68A16F653.

Impossible de se connecter à un ou plusieurs systèmes vCenter Server :

https://SRV-VCENTER.xxx.local:443/sdk

IN attachment, ds.log (inventory service) and vpxd.log

I have search on the web, found equal issue but nothing can correct my problem.

I have also open support request but no reply for moment...

Any idea ?