The problem is that I tried 4 different downloads. All had the same problem.
No dia 29 de Ago de 2012 15:27, "John Ralls" <firstname.lastname@example.org> escreveu:
On Aug 29, 2012, at 7:09 AM, Telmo Santos Carlos <email@example.com> wrote:
> Thanks for your prompt reply. It is MacOSX 10.7 Lion.
OK, so not a Gatekeeper issue. Perhaps the download really did get corrupted. I just downloaded and installed without difficulty, so there's nothing wrong with the file on Sourceforge.