Error installing 6.2.3.0 on XE2

Hello,


while building the package on XE2 I got the following error message.
[DCC Fatal Error] advgrid.pas(488): F1026 File not found: 'Windows.dcu'
Any advice?

Thank you,
Stefano

Please verify settings for unit scope names, it should contain:

Winapi;System.Win;Data.Win;Datasnap.Win;Web.Win;Soap.Win;Xml.Win;Bde;System;Xml;Data;Datasnap;Web;Soap