After going through it several times and instaling Lion (10.7.4) I found that I had lying around a source installation of neko 1.8.2 in /usr/local/lib/libneko.dylib which was bringing everything down. After removing it the nme command starts working and no more neko crashes are found in the system console.
I've downloaded the 3.4.0 dmg for mac under snow leopard to try out haxenme. After downloading some samples I tried to compile them with "nme test blah.nmml ios -simulator" but the command did nothing. I tried other platforms like mac and nothing got on the screen, nothing happened, no files produced. After some scratching I opened the console and saw several neko crashes. As far as I know this is the only thing I've found with log errors. What is happening and how can I solve this neko crash?