Thank you so much! Now it works perfectly!!!

I have searched for "low_graphic" but I haven't found it. Perhaps is "low_fps"?
However, even with "low_fps=true" the game doesn't start.

This is my "config.ini":

[general]
locale=en
[path]
read-data=__PATH__system-read-data__
write-data=__PATH__system-write-data__
[debug]
show_fps=basic
show ...

I think is my computer problem, because even into Virtual machine (windows 7) the 0.7.2 doesn't start.

I changed everything, but it doesn't even start; maybe because my version of mac is Snow Leopard?

Yes, the crash report (is huge) is this:

Process: factorio [723]
Path: /Applications/factorio.app/Contents/MacOS/factorio
Identifier: com.factorio.factorio
Version: 0.9.8 x86_64 (2012071800)
Code Type: X86-64 (Native)
Parent Process: launchd [157]

Date/Time: 2013-10-21 17:56:12.272 +0200
OS ...

Hi everybody,
I know 0.7.2 is just an alpha version of Factorio, but I'd like to inform you that this version doesn't even start on OSX Snow Leopard.

I'm confident on a fast resolution of the issue, meanwhile I'll enjoy the 0.7.1

It's only a fast question.
In this new version (0.29 alpha) i can't remove the laser towers, how can i do it?
Now i resolved this problem SHOOTING them XD

Ps: Trains can only trasport the character?