lazy reference to polymorphic mapper fails

[svilen]

g'day some more.
This time about table-inheritance, 3 levels - C inherits B inherits A,
and A.linkA references to B (and subclasses).

It is possible that something is wrong in the way i'm defining
these... the B'part of the polymunions is according to your advice
some time ago, to avoid duplicating id columns.

adios
svil