Hi,
I was getting errors using the decode sample application when I referenced the fit.dll instead of including the classes directly in the project.  I was getting an error on the values list of the Field class. I found out that I had to change the access modifier from internal to public on 'values' in the Field class: 
internal List<object> values  = new List<object>();      
to
public List<object> values  = new List<object>();      
and recompile the dll.
'internal' is only for assembly scope and only accessible from code in the same dll
gtz