iOffline/iPublishCentral Reader can’t be opened because it is from an unidentified developer.
This new security feature is called GateKeeper, and it doesn’t mean you can’t run those unverified apps on the Mac, you just have to either temporarily skirt the security blanket of GateKeeper, or turn off the app limitations entirely.
Temporarily Get Around “App Can’t Be Opened” Alert Message
This is probably the best option for most users, since it maintains some security:
Right-click (or control-click) the application in question and choose “Open”
Click the “Open” button at the next dialog warning to launch the app anyway
You can do this with any third party app that gives you this warning dialog and open it anyway.
- Launch System Preferences from the Apple menu
- Choose “Security & Privacy” and then click the “General” tab, followed by clicking the lock icon in the corner to unlock the settings
- Look for “Allow applications downloaded from:” and choose “Anywhere”
- Accept the security warning and allow
- You can now launch any app from any location or developer