I'm also having problems since the latest version. My server log says:
openvpn[3646]: 62.194.172.148:42574 TLS_ERROR: BIO read tls_read_plaintext error: error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher
I share the same config with my iOS client which works fine for now. Only the Android Clients does not want to connect.
This is the relevant config part:
cipher AES-256-CBC
tls-cipher TLS-DHE-RSA-WITH-AES-256-CBC-SHA
I agree with qingz that it may be something with PolarSSL, although I'm unable to verify that.