FileUpload in Struts

[Saathvik Reddy]

Hi,

I am working on multiple file uploads. I am using mapped properties and LazyValidatorForm. When i upload multiple files it works fine but if i upload a single file i get this exception. Could any one say what this exception mean?? Ideas are appreciated!

java.lang.IllegalArgumentException: Non-mapped property for 'questionflow18(questionflow18_1)'org.apache.struts.upload.CommonsMultipartRequestHandler$CommonsFormFile

Thanks,