OpenWebIf error after update on DM800, ET9200

I just updated a DM800 HD (first generation, OpenPli 2.1) and a ET9200 (OpenPli 3.0).

These two receiver were not update since end of august so this last update download more than 100 package for each receiver.

After update and reboot, everything work well except OpenWebIF full browser mode (the mobile interface works).

When I connect to OpenWebIf, I get the left menu column (with a strange "TV in new window" just below the Radio menu item), the header but no information on the right of the page.

Clicking on every menu item give..... no result.

On the top right part of the page there is an error message saying "Sorry, this function is not yet implemented."

I tried on the DM800 :

- uninstall OpenWebIf
- reboot
- install OpenWebif
- reboot

but I still get the same problem (it is exactly the same on my ET9200).

Any idea ? (see the attached picture)