Mac won’t open program

[GEORGEF@ALUM.MIT.EDU]

Can´t open on my mac either. It shows the following messages: 
- “JamKazam” is damaged and can’t be opened. You should eject the disk image. 
- “JamKazam” is damaged and can’t be opened. You should move it to the Trash.

Very strange. Someone can help?

i'm also seeng this problem. I tried running the installer program this morning and get the same error. I'm running OS X El Capitan Version 10.11.6 on a 2011 Intel Core I5 (64 bit)  vintage MacBook Air. Can someone verify that the installer works on this version of MacOS? The installation prereqs says OS X 10.7, 64 bit later is supported.