Error in exporting Text to netcdf

Saving Text into netcdf from visad Spreadsheet gives me the following error,

java.lang.IllegalArgumentException: Not an Array
        at ucar.netcdf.Attribute.<init>(Attribute.java:106)
        at
visad.data.netcdf.out.DependentTextVar.myAttributes(DependentTextVar.java:62)
        at
visad.data.netcdf.out.DependentTextVar.<init>(DependentTextVar.java:47)
        at visad.data.netcdf.out.VisADAdapter.visit(VisADAdapter.java:163)
        at visad.data.netcdf.out.VisADAdapter.visit(Compiled Code)
        at visad.data.netcdf.out.VisADAdapter.visit(VisADAdapter.java:225)
        at visad.data.netcdf.out.VisADAdapter.visit(Compiled Code)
        at visad.data.netcdf.out.VisADAdapter.<init>(VisADAdapter.java:68)
        at visad.data.netcdf.Plain.save(Plain.java:86)
        at visad.ss.BasicSSCell.saveData(BasicSSCell.java:1663)
        at visad.ss.FancySSCell$3.run(FancySSCell.java:482)
        at java.lang.Thread.run(Compiled Code)


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Thanks,

Peter Xiangchi Cao
Tel. (217) 244-3830
Fax. (217) 244-1987
Scientific Data Technologies Division
National Center for Supercomputing Applications