ERROR: Import RFC Model

Hi!

I reinstalled the Sneak Preview of WAS (fichier WAS_Preview_DevEdition_6_3_Beta2.exe ) and I'm creating a new Web Dynpro Application.

When I try to create a New Model, with Import RFC Model, I have this error:

Message

Cannot load proxy class CommitModel, detail: com.aegis.commit.model.proxies.CommitModel_PortType

Exception:

java.lang.ClassNotFoundException: com.aegis.commit.model.proxies.CommitModel_PortType

How can I solve this? May I reinstall the WAS?

Thanks in advance.