Pb building a package with the Manager

[philolaos]

When I tried to build a package, I received the following error:

Code: Select all

com.ascential.xmeta.exception.data.UniqueConstraintViolationException: A unique constraint violation occured on the object with RID "3b37fb44.7dc2088e.6601059c.10815d10-107a-4ad5.a4a9.622c4162a9aa" of type "Folder" from the package "http:///0.0.1/DeploymentModel.ecore"

either through the Build button, after selecting objets to put in, or if I directly try to create a new folder for packages from the left pane.

Any ideas?