Just looked at the logs (only the beginning is interesting for me), but it fails at the same point even after having fixed the checksums (although the scanner did not seem to care they were misplaced)
But one thing surprises me: in the usb dialogs, I don't see any USB Interrupt messages like in the Windows snoop, only Bulk ones are present. And I remember one important point: running the pixma backend on a Mac is not sure it will work, because the Darwin libusb library on Mac does not implement USB Interrupts :-( Some PIXMA/Imageclass models can cope with that, but others not. And I'm afraid we might be here in this pitfall. Do you confirm running it on MacOS ? Which version of MacOS and Darwin libusb ? To be sure, could you try taking some additional USB logs this time, just record the first 30 seconds it's fine (the 50K log you sent is enough for debug) with these commands: export SANE_DEBUG_SANEI_USB=255 export SANE_DEBUG=255 export SANE_DEBUG_PIXMA=11 scanimage -T 2> scanimage.log and send back the logs Nicolas Le mercredi 09 juin 2010 ? 15:32 +0000, twain43 at hotmail.com a ?crit : > Uhm....I have to point out the log I attached a minute ago reports > just the first lines of the original one: over 300mb in less than 2 > minutes.... > > Twain28 > > > ______________________________________________________________________ > Il tuo mondo MSN a portata di clic. Scarica IE8 per MSN > -- > sane-devel mailing list: sane-devel at lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/sane-devel > Unsubscribe: Send mail with subject "unsubscribe your_password" > to sane-devel-request at lists.alioth.debian.org