ScanSoft TEXTBRIDGE PROFESSIONAL EDITION 8.5 User Manual page 170

TWAIN Sources option disabled in Select Source dialog.
Make sure that the TWAIN folder is installed in the
Preferences folder in the System Folder.
Make sure that the Source Manager is installed in the
TWAIN folder.
Make sure there is an appropriate TWAIN data source in the
TWAIN folder.
Desired TWAIN driver does not appear in the Select Source
dialog
Make sure there is an appropriate TWAIN data source in the
TWAIN folder.
OK in Select Source dialog with TWAIN driver selected results
in error message 1082: "TextBridge Pro could not open the
scanner.
See the explanation and possible solution for error message
1082.
Attempt to set input from scanner results in error message
1078: "There is no scanner driver installed or selected. Install
and/or select a scanner driver for your scanner."
See the explanation and possible solution for error message
1078.
Attempt to set input from scanner results in error message
1035: "TextBridge Pro could not open the scanner. Check to
see that the scanner is on and ready. Otherwise, check that
the correct scanner driver is selected in Chooser".
See the explanation and possible solution for error message
1081.
Troubleshooting and Error Messages
A–25