Mac won’t open program

[herman]

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.

i figured it out. the jamkazm installer isn't signed by an Apple trusted developer and it isn't in the app store, so my MacOS security setting disabled the unpacking of the installer image. I tweaked my security setting to enable download from any Internet site, ran the installer, copied the installer into the Applcations folder, started it, acknowledged that I wanted to open it and it opened. I then upped my security setting back to only allowing files downloaded from the app store or trusted developers to be installed.

JK is a Apple approved developer. But in my case the full software of my MacBook needed to be reinstalled. this needed support by the great Apple.  HD.