"The 64-bit version of Ableton Live cannot run on this computer because the processor does not support certain required features"
- Live Versions: 8.4 - 9 64-bit
- Operating System: All
This error message is indicating that Live is not compatible with the 64-bit implementation of the CPU. For example when the processor lacked the CMPXCHG16B instruction.
To run Live please use the 32-bit version of Live or upgrade the CPU of your computer.