Is there anyone who has the same problem with installing SP2 for XP pro in combination with all (registr.) DCS tools? When i try to install Xp Sp2 i get the error: "The file c:\windows\apppatch\drvmain.sdb is opened or in use by another application" (own translation). The Servicepack and the OS are both in Dutch (NL). Has this anything todo with regprot or TDS-3 or PG ( i closed them all) if not then sorry for dropping this q. in the wrong Forum. Gast.