By the way, what is the templates files for ? Do you mean a Fujitsu scanner specific configurations or something like that ?
When you run your application and select source, the application will read the driver info from the files under C:WindowsTWAIN_32.
If the problem persists after you reinstall the driver, and if the users are using Vista/7/2008, you may ask them to run the application as administrator to see if it works.
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Catherine Sea
Scanner COM Control | TWAIN ActiveX/Plug-in