PWGL won't start on MAC Intel

Hi,
I'm new to PWGL (have to start a project on that and I'm quite excited) but the beginning was really frustrating.

Something really weird happened: I installed PWGL and tried my first patch. Then, I saved and close it. After a couple of weeks I went back to PWGL, and found out it's not there (but the user folder is still there).

I might have erased it by accident (I had a lot of issues recently on my mac and erased a lot of stuff), but I tried to install it again and it wouldn't work. I download the zip file, I open it, I install the libsndfiile library, then start it. It will show up for a second, and then as soon as the terminal shows up it stops. (..the terminal?)

This is the message I receive on the terminal:

Last login: Sat Apr 18 12:03:41 on ttys000
/tmp/LWtemp.dhcp-0044217667-e7-02.client.student.harvard.edu.13098.1.command ; exit;
dhcp-0044217667-e7-02:~ Gab$ /tmp/LWtemp.dhcp-0044217667-e7-02.client.student.harvard.edu.13098.1.command ; exit;

Any ideas?

Thanks!
Gab