Ok, that’s confirmed, unfortunately. Your CPU doesn’t support AVX instructions, so the current build isn’t going to work on that machine. Sorry 
For our binary releases we’ll have to have a think about whether to change this setting: we don’t want to freeze people with older processors out, but these instructions do make a real speed difference.
The code for everything will be On Github Very Soon™: if you’re happy with compiling stuff it should be simple to build a version that is optimal for your system.