Using Image Capture with HP scanner
Printing works fine, directly and shared over Airport (MacBook Pro -> Airport -> iMac -> USB -> Printer), and scanning works fine on the iMac with the supplied HP software. I can also scan from Photoshop using "Import" - "HP Scan Pro (TWAIN)".
However, for some reason I cannot scan from Image Capture. It says "No Image Capture device connected" even though it does list HPScanPro in its device browser. It's under "TWAIN Data sources': 'HPScanPro'. There's a strange tiny blue-gray cross icon under 'Kind' and a 'Use TWAIN UI' button in the 'Use TWAIN UI' column (?). The button does not appear to do anything.
The reason I want to be able to use Image Capture is because I want to share the scanner with my laptop over Airport. If Image capture can use it on the iMac it should be able to share it with Image Capture on the laptop, allowing me to scan from the laptop over Airport. But if it doesn't even work on the iMac directly...
Any tricks I should try?
There's a 'HPScanPro.ds' folder in "Library/Image Capture/TWAIN Data Sources', so I really don't see what could still be missing for Image Capture to use it.
MacBook Pro 17 inch, Mac OS X (10.5.6)