Worbench on Vista 64Bit

Hi,

I realized a strange behaviour with workbench on Vista 64Bit. Installation works fine and workbench starts, but the process editor view stays grey.

I checked the system requirements and Vista 64Bit is not listed (see below). Can anyone confirm this behaviour? Has anyone a workaround?

Thanks in advance,

Michael

System Requirements for Workbench ES:
Microsoft Windows XP Professional SP2 and above (32 bit)
Microsoft Windows XP Tablet PC SP2 and above (32 bit)
Microsoft Windows Server® 2003 SP1 (32 & 64 bit)