The Xtras package in Xtreams uses libcrypto. The EVP_MD_CTX_init error is saying that the FFI call to the libcrypto library that comes with OpenSSH cannot be found. This library is used by Altitude to generate random URLs.
 
 Open your Terminal and "man openssl" to see if you have libcrypto. I think it comes standard on a Mac. If that's the case, then perhaps your FFI cannot make the call to the library.
 
 Chris

Very thanks for fast response.
Terminal said have openssl.
Go to found the mac book air which have the latest Mountain Lion and see what’s happen

Thanks to you , Colin and all which is working on this,
Nice to see finally Xtreams found his way into Squeak

Edgar