.NET IDP & Java SP does not work... (Original Subject: .NET SP & Java IDP)

Hi, all,

We are also trying to set SP with SourceID.Java and IDP with SourceID.NET
up. Then, we are facing a problem.
That is a failure of signature verification into sequence of Single Sign-On
and Federation at SP. 
An exception happened.

+The SP was installed Demo-site from SourceID.Java archive, and it worked
SSO/Fed correctly with IDP also installed from same archive.
+The IDP was also installed Demo-site in SourceID.NET one, and it worked
SSO/Fed correctly with SP installed from .NET too.

After that, Java SP and .NET IDP were configured for enabling SSO/Fed each
other for instance, exchanging liberty metadata together.
I really would like to know how to set them up and work correctly.

>I ran into a couple problems when doing this. One was simple to fix as
>the certificates in the .NET code are not the same certificates in the
>Java code. Just be sure to correlate this with the sp.

Does it mean the certificate in the .NET in liberty metadata was wrong?
I believe there is compatibility with RFC format of certificate even between
Java and .NET(or MS system)...

>I had to modify the Descriptor
>found in the code to name this element a String instead of an Object.

I still do not understand this solution.
Did you replace all Object castings to explicit String castings in the
Descriptor codes generated by Castor?

>However, this is not a real fix. I contacted the folks at
>Castor as I believe this to be a bug in Castor and they are looking into
it.

Did the folks at Caster do any action or response?

Tx.
Kind regards,
/* NTT DATA Corp. Yamazaki Yasuhiro */