Jython classpath question

[Tennessee James Leeuwenburg]

I can now import every class except the one which I would most like to
import.

The fully-qualified classname is au.gov.bom.aifs.dv.dv.
I can import anything else from the au.gob.bom tree, and also other things
from the dv tree such as dv.LayerManager. It's just dv.dv that is causing
hassles. 

Are there any pitfalls or required naming conventions that I should be
aware of?

Thanks,
-Tennessee