I got this error when I was trying to use a get accessor method (after session.load (...) ) on one of the nullable fields of the column.

1.) I made sure that column does not have a primitive data type in the POJO or in the cfg.xml

2.)There is not failure of security check

3.)Arguements being passed is of the same type (i.e.) java.lang.String (hibernate string)

I am running this with the latest hibernate 3.03, jar, cglibs2.1.....

Can you please help or let me know if you need more information..

Thanks