Ableton Forum

you should be able to put your serial number into the download seciton of the site and redownload and install. if you have a serial number problem (the only obsolete serials should be for live 1 i think), better get in touch with ableton directly.
I asked for a favor, not your little smart mouth ...

My ableton live 4 program is corrupted, and my serial number is obselete. Can anyone be so kind to offer a serial number and/or a downloadable live program so that I can get back to business without this frustrating problem. I'll offer to do some graphic design (cd cover/poster) if you can help me ...