Erlang's ebuild depends on the wrong version of OpenSSL. It currently uses 0.9.6 something, when Erlang requires 0.9.7 for crypto support.
Hm, the ebuild states: ssl? ( >=dev-libs/openssl-0.9.6d ) that is if there is 0.9.7 installed it will pick it up over 0.9.6. Or do you mean that new versions do not play nicely with 0.9.6? Please also test erlang-10.2.0 (R10B-0), it was recently added to the tree and I adjusted its openssl dependency on >=0.9.7.. George