When I attempt to load Safari I get the error message, "Safari will not load because of a problem. Check with developer to make sure Safari works with this version of OS X. You may have to reinstall the application. Be sure to install any updates to the application and OS X."
Mac Pro
As others have said, many thanks to harryhayes for the quick fix. I had a little bit of trouble finding the right path to the final piece to be deleted. So I thought I'd include how I got there. I have a MacBook Pro Retina mid-2012. Open your Finder window and along the top bar you'll see "Finder File Edit View Go Window Help." Click on Go. Select Computer from the drop down menu. Select Macintosh HD. Next select System (not Library.) After clicking System you'll see Library. Click that and you'll find the Private Framework. Click that and there you'll find MobileDevice.framework. Drag it to Trash. And Safari should be back and running. So to recap the steps: Finder>Go>Computer>Macintosh HD>System>Library>Private Framework>MobileDevice.framework. I cannot tell you how much I appreciate you folks who helped solve this problem which was major.
P.S. I just discovered a quick way to get to Macintosh HD. Click the keys: Command+Shift+C.
This did not work for me.
2009 Mac Mini, Yosemite, Safari 10.1.2.
I have dragged that file into the trash and restarted the computer.
Safari still says "..contact the developer...etc"
That would be great. But I cannot find El Capitan in the App Store, only Mojave is available (which I cannot download on my aluminium, late 2008 MacBook).
Safari will not load
