Hi Mac users,
some of you reported the “PDFsam is damaged and can’t be opened” error when trying to install the PDF Split And Merge dmg package. After some investigation and users feedback I can finally write what is causing that. The issue is caused by a new feature of Mountain Lion and OS X Lion v10.7.5, called Gatekeeper which “help protect your Mac from malware and misbehaving apps downloaded from the Internet”. It does that by preventing you from launching apps that are not downloaded from the Mac App Store which is “The safest and most reliable place to download and install apps”. Now, assuming you still want to install PDF Split And Merge even if you didn’t download it from the “most reliable place”, what can you do? As sorice pointed out you have to:
Some more information can be found here
You can also control-click the package then select “open” – that way you don’t need to change your security settings.
My PC is Windows 7 64-bit, already downloaded the file needed to install the program PDF Split and Merge, but I’m not found the site necessary to disable security and allow the program downloaded from the internet to work anywhere.
Can you tell me step by step of this operation?
From now on, thank you.
Thank you! Great it worked
Thank you!!!! I love PDFsam and was sad I might be able to use it after switching to a Mac.