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CanoScan 4400F won't communicate with Toolbox 5.0

After two external disk crashes, I have apparently mostly recovered from loss of some files and programs. One lingering problem is still no communication established between CanoScan 4400F scanner and CanoScan Toolbox 5.0. I have checked connections repeatedly and successfully downloaded new scanner driver and new Toolbox program, after first deleting the existing version.


The error message when starting up Toolbox is "Cannot communicate with scanner. Cable may be disconnected or scanner may be turned off. Check status. Scanner driver will be closed. 1.0.0." The scanner does not have an on/off switch.


I'm badly in need of some guidance on what to do next.

MacBook Pro (13-inch Mid 2009), Mac OS X (10.6.8), External mini-stack classic

Posted on Jun 3, 2013 12:36 PM

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CanoScan 4400F won't communicate with Toolbox 5.0

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