CptSlappHappy

Could someone help me with running Technic? I've had technic a while ago then i got a new computer and re-downloaded it. I go to log in (username and password already in, selected my mod pack) and when its loading it all. It gets to the final bar and then it says download failed. Shows at the top Technic Launcer 1.0.2.0 Also when i go to the technic launcher download location, i download the mac version (im OS X 10.9) It downloads the jar file and then when i attempt to run it, it says""TechnicLauncher.jar can't be opened because it is from a unidentified developer"