vWorkspace 7.6, Problem with Flashredirect and youtube on Embedded Win7

Hi There

We are testing vworkspace since a few months and are shortly before production start.

A few days ago i updated to 7.6

We publish Windows 7 Desktops with HyperV

Since this update youtube don't work anymore on hp thinclient with embedded windows 7 (t510, t610, t5570)

You see the green flash and after there is en error in the youtube windows.

German: Es ist ein Fehler aufgetreten, versuchen Sie es später erneut

In english it must be like "Error ocured, try again later"

The error message must be shown from the local flash player because when i made a printscreen in the vdi, there is no error message, only the green window

We have no problems with other flashwebsites

We have no problems when the client ist not Windows 7 Embedded. (Win7 Pro x64 or x86)

We have no problem with youtube when the website is opened on the local internet explorer on the windows embedded

Flash is installed in same version on the vdi and the client

Client is the latest

We installed the ActiveX and Plugin on the client

Anybody any idea?

Thanks

Marc