I'm getting the following error when trying select a record

Error 500: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of salesforecast.SalesHistory.setSales6

This is how the mapping is setup
<property name="sales6">
<column name="SALES_6" sql-type="DECIMAL" not-null="true"/>
</property>

the variable type in my class is a double

and the setter is:
public void setSales6(double d) {
sales6 = d;
}

I only get this error if the database field is blank.

Please use Double instead of double.

ciao

Sven