TWAIN errors appear when starting to scan. (Macintosh)
TWAIN driver has not been chosen as the primary source in your scanning application.
Make sure the Brother TWAIN driver is chosen as the primary source.
In Presto! PageManager, click File, Select Source or Import From Scanner and select the Brother TWAIN driver.
Mac OS X v10.6.8 or later users can also scan documents using the ICA Scanner Driver.