Mavericks / Canon Canoscan 8800F: Hardware Buttons not working.

I've just upgraded to Mavericks. I've also updated the driver (to 13.9.2a) and installed the latest MP Navigator 1.0 (1.0.7). Is there something else I need to do?
I'm having two problems since the upgrade:
- The hardware buttons on the scanner cover have stopped working
- I'm unable to add the scanner in the System Preferences: Printers and Scanners dialog, because it's not listed as one of the available devices.
However:
- MP Navigator as well as TWAIN - compatible applications (e.g. Adobe Acrobat Pro) are working properly: they are able to see and use the 8800F (even though it's not listed as an available scanner in System Preferences)
Further explanation: The row of hardware buttons on the scanner's cover have stopped working since the upgrade to Mavericks. For example
- The "Copy" button is supposed to launch MP Navigator, scan the document on the glass and print the document.
- "Email" is supposed to scan the document, open a new message in "Mail" and insert the document as an attachment
- There are also several "PDF" buttons that are supposed to scan to a PDF document and do various things with it..
These buttons worked in previous MacOS versions, but none of them do anything since I've installed Mavericks.
Also, in the System Preferences: Printers and Scanners window: I thought I'd try deleting and re-adding the 8800F there to see if that might clear up the buttons problem. I deleted it, but am unable to add it back because it is not listed as one of the available devices. So then I checked the "System Report" under "About this Mac," and found that Canoscan is listed there as one of the USB devices.

Responding to my own post: I've learned that the problem is in the ICA driver for this device, and we're waiting for an update to that to resolve this problem.
For details, please see https://discussions.apple.com/message/23758000#23758000

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