After upgrading the client to 9.1 from 8.3, duplexing from the scanner toolbar has not been working.
If I select TWAIN, duplexing isn't an option.
If I select WIA, duplexing is an option, but it's ignored.
Duplexing can be forced through the scanner options menu, but not the toolbar.
I kicked the client up to 9.1.1.486 (from 9.1.0.1441) and installed the latest driver updates from Kodak... no luck. [Windows 7 64-bit]
Any thoughts/suggestions would be appreciated.