TWAIN_DSM_ERROR

Scanning>java -classpath .;uk.co.mmscomputing.device.twain.jar TwainExample
JarLib.load: Successfully loaded library [jar:file:Scanning/uk.co.mmscomputing.device.twain.jar!/uk/co/mmscomputing/device/twain
/win64/jtwain.dll] from jar file location
Source Manager Open
Source Manager Open
uk.co.mmscomputing.device.twain.TwainIOException: uk.co.mmscomputing.device.twai
n.TwainScanner.setException:
    Failed during call to twain source.
        cc=No Data Source
        rc=1
        at uk.co.mmscomputing.device.twain.TwainScanner.signalException(TwainScanner.java:131)
        at uk.co.mmscomputing.device.twain.jtwain.signalException(jtwain.java:287)
        at uk.co.mmscomputing.device.twain.jtwain.cbexecute(jtwain.java:243)
        at uk.co.mmscomputing.device.twain.jtwain.nstart(Native Method)
        at uk.co.mmscomputing.device.twain.jtwain.access$200(jtwain.java:12)
        at uk.co.mmscomputing.device.twain.jtwain$1.run(jtwain.java:338)
uk.co.mmscomputing.device.twain.TwainFailureException: Failed during call to twain source.
        cc=No Data Source
        rc=1
        at uk.co.mmscomputing.device.twain.TwainSourceManager.call(TwainSourceManager.java:27)
        at uk.co.mmscomputing.device.twain.TwainIdentity.open(TwainIdentity.java:70)
        at uk.co.mmscomputing.device.twain.TwainSource.open(TwainSource.java:99)

        at uk.co.mmscomputing.device.twain.TwainSourceManager.openSource(TwainSourceManager.java:93)
        at uk.co.mmscomputing.device.twain.jtwain.cbexecute(jtwain.java:234)
        at uk.co.mmscomputing.device.twain.jtwain.nstart(Native Method)
        at uk.co.mmscomputing.device.twain.jtwain.access$200(jtwain.java:12)
        at uk.co.mmscomputing.device.twain.jtwain$1.run(jtwain.java:338)