There are a few things needed for debugging in Aptana ... I had the same problem and I had to uninstall Git and then install PortableGit and then it worked fine.
I followed all the instructions for downloading Aptana on another computer that it worked perfectly with. I thought I had Git on this machine, I do not need PortableGit - I guessed what was wrong ...
Make sure you add Git to your path (on Windows - click "Start" Rt-Click on the computer β "Properties" β "Advanced system settings" β "Find") and add the existing line to the end "; C: \ <% System Program%> \ Git; " - in my case C: \ Program Files (x86) \ Git - if you are using a 64-bit version of Windows C: \ Program Files \ Git if 32Bit (add a semicolon before adding this.
It also requires Ruby and the latest version of Java (even I hated adding it because of its security issue ...) (follow the download instructions ... the rest was optional for me.
FYI - before opening Aptana, I had to βUninstallβ Add-On for Firebug since it will install the appropriate version. After that, open Firefox and in Add-On click "Advanced" under firebug and set it to "Do not auto-update."
Good luck ... let me know if this doesn't work ...
Dan b source share