I had the same problem and this seems to be a bug in the ScanSnap software. To fix it, you can: 0. Exit ScanSnap Manager 1. Locate the preferences files for ScanSnap. Most likely in ~/Library/Preferences. Name should be something like "jp.co.pfu.ScanSnap.V10L10.plist". 2. Transform the .plist files into xml with plutil: plutil -convert xml1 <filename> 3. Open the file in a text editor, find the preference called "OCR" in the file and set the value (in the next line) to "0" instead of "1". 4. Start ScanSnap Manager. This worked for me.