If you’re lucky, this is a one-time event.
You canforce quit the appand retry, hopefully with success.
It’s always smart to start with the simplest fix possible.
This step is essential following an update to the Mac operating system.
In many cases, updating the affected app cures the problem.
Delete the app preference file (plist file).
you could delete this file manually or with aMac app uninstaller like AppDelete.
As a result, the app may not open.
You have to reconfigure the app’s preferences afterward.
Start your Mac in Safe Mode.
This troubleshooting startup environment restricts most startup items.
It also limits the operating system to use only the basic OS core.
The conflict may come from another app or a startup item.
Use Disk Utility to repair app permissions.
This step ensures the utility and any associated files it needs have the correct permissions required to run.
You don’t need to know what the permissions should be.
Your Mac keeps a database of the default permissions for most applications you install.
File permissions are automatically repaired with software updates in OS X 10.11 and later.
Then reinstall it from the App Store.
ping the app developer.
FAQ
Open theFinder on the Macand go for the system.
Press the spacebar to open a Quicklook window, which includes the version number of the app.
pop swing open the Mac App Store and search for the app.
If a newer version is available, download it.
A bouncing icon usually means the app is trying to get your attention.
Look for a small dialog box somewhere on your screen.
The app may need you to enter a password or some other information before it can launch.
