I am working with data in an xlsx excel file, I get the sheet name and the fields from the header row with no problem, but when I try to preview it says next error and only previews rows until the previous row of one who has an empty field. How can I avoid this Null pointer exception? what checkbox or configuration option have I got to fill?
It is strange, there will be no matter viewing rows with one value of a column empty.


2011/02/17 13:09:43 - Excel Input.0 - ERROR (version 4.1.0-stable, build 14410 from 2010-11-16 16.43.28 by buildguy) : Error processing row from Excel file [C:\FILE.xlsx] : java.lang.NullPointerException
2011/02/17 13:09:43 - Excel Input.0 - ERROR (version 4.1.0-stable, build 14410 from 2010-11-16 16.43.28 by buildguy) : java.lang.NullPointerException
2011/02/17 13:09:43 - Excel Input.0 - ERROR (version 4.1.0-stable, build 14410 from 2010-11-16 16.43.28 by buildguy) : org.pentaho.di.trans.steps.excelinput.ExcelInput.fillRow(ExcelInput.java:122)
2011/02/17 13:09:43 - Excel Input.0 - ERROR (version 4.1.0-stable, build 14410 from 2010-11-16 16.43.28 by buildguy) : org.pentaho.di.trans.steps.excelinput.ExcelInput.getRowFromWorkbooks(ExcelInput.java:644)
2011/02/17 13:09:43 - Excel Input.0 - ERROR (version 4.1.0-stable, build 14410 from
2010-11-16 16.43.28 by buildguy) : org.pentaho.di.trans.steps.excelinput.ExcelInput.processRow(ExcelInput.java:450)
2011/02/17 13:09:43 - Excel Input.0 - ERROR (version 4.1.0-stable, build 14410 from 2010-11-16 16.43.28 by buildguy) : org.pentaho.di.trans.step.RunThread.run(RunThread.java:40)
2011/02/17 13:09:43 - Excel Input.0 - ERROR (version 4.1.0-stable, build 14410 from 2010-11-16 16.43.28 by buildguy) : java.lang.Thread.run(Thread.java:662)
2011/02/17 13:09:43 - Excel Input.0 - Finished processing (I=123, O=0, R=0, W=123, U=0, E=1)