We have a computer that is running windows xp 64-bit and an HP scanjet n6010 scanner. We can scan using windows (wia?) but not twain driver. HP is telling me that the scanjet did not install the twain driver and they won't troubleshoot it. I don't know where the twain drivers came from because according to twain.org the manufacturer writes the twain driver. I doubt it came from windows xp. I have this working on 2 other computers with the exact same setup and they are working fine. I have compared all the file versions for the scanner drivers and even copied and pasted the C:\Windows\Twain32 folders from one of the other computers but it didn't fx the issue. When I try to scan from any application using the twain option, here is what happens: I can see a window in the toolbar popup that says "HP N6010 Twain" as if there was a window opening up behind the other windows. I can't get to it and I don't even know if anything is opening up. I have tried shrinking the original application all the way down to a tiny size and then clilcking on Scan. I don't see anything pop up behind it and I can't move the app until i right-click the "HP N6010 Twain" box and choose end on the toolbar. I've tried Alt+Tab to get to it but nothing comes to the forefront when I choose that window. So I am not sure if anything is popping up at all or if I just have issues with the twain driver.