superclass not recognized

I have a problem with my superclass. In Xojo 2014r2.1 it works fine… but after that i got an error with my superclass.

Steps: QueryBuilder as Control
ORM as QueryBuilder
ModelUtilisateur as ORM

Dim pUtilisateur As ModelUtilisateur = mEmploye.Utilisateur.Find() <- this return an ORM

ModelUtilisateur is supposed to be an ORM… but it sees it as itself (ModelUtilisateur). What changed in 2015r1 ?

Expected Result:
superclass as it super

Actual Result:
superclass as himself