AAL 0x8010001F: Incorrect number of segments in JWT token

I'm validating AAL, but when I test the token validating AuthenticationContext.AcceptToken always throw the exception {"AAL 0x8010001F: Incorrect number of segments in JWT token"}. Any idea? The token is recovered using Windows Live Id or Google Id Identity Providers from my ACS account.

thanks in advance

Microsoft MVP Compact Framework