AS2012 xgauge installation error

Today I installed AS2012 in a network environment and everything runs fine except the xgauge installation reports an error:

Problem checking Access rights to FSX aircraft folders. You may need to adjust your windows security

rights and if running vista, make sure you run this program as adminstrator (right click the XGauge Wizard

icon). This can also occur, when FSX is open. Make sure it is CLOSED before trying again.

- client and server are running Win7 64bit

- FSX is installed on a separate drive

- full access from the client to this drive (I can edit from the client any file and save it)

- running the Wizard as Administrator.

Any ideas?

Thanks,

Otto