[sage-support] ImportError starting Sage 3.4 in Mac OS X 10.4.11

I just downloaded Sage 3.4 for Mac OSX (sage-3.4-Intel-OSX10.5-i386- Darwin.dmg). I installed it without trouble, but trying to run it I get the errors below. I'm running Mac OS X 10.4.11 on an Intel Core Duo Mac Mini. What am I doing wrong? Is there a different version of Sage specifically

[sage-support] What is a module?

satisfied. Without the service_identity module and a recent enough pyOpenSSL to support it, Twisted can perform only rudimentary TLS client hostname verification. Many valid certificate/hostname mappings may be rejected. -- -- John G. Heim; jh...@math.wisc.edu; sip://jh...@sip.linphone.org

[sage-support] Re: What is a module?

and make sure all of its dependencies are satisfied. Without the service_identity module and a recent enough pyOpenSSL to support it, Twisted can perform only rudimentary TLS client hostname verification. Many valid certificate/hostname mappings may be rejected. --