TAML "WriteDefaults" field fatal error

I was exploring TAML capabilities and ran across "WriteDefaults" field and "setWriteDefaults" method, in the wiki it says that this field is used to define

Quote:Whether to write static fields that are at their default or not

.

I went ahead and wrote the following code to explore what exactly "WriteDefaults" does:

%taml = new Taml();
%taml.WriteDefaults=true;
%taml.write( %object, "stuff.taml" );

Ran the program and got this fatal error: fatal error simObject.cc @ 935 -> field value cannot be NULL.

setWriteDefaults() also generates the same error.

However ..

%taml.WriteDefaults=false;

does not generate any errors.

I'm on Windows XP, using T2D development.