Mavericks: I got this message when I tried to direct a PNG file to Preview: "Preview can't be opened because it is from an unidentified developer". I lowered my security in system prefs and now it can be opened . . . but how can Apple be an unidentified developer?
iMac, OS X Mavericks (10.9), Mavericks question
It is probably a glitch, but it may also indicate that the app has been tampered with. Anything that modifies the internal structure of the App package will invalidate the code signature.
What is the version number for that copy of Preview?
Hi Barney - 15E, it's a new version of Preview dated 9/15/2013 . . . version 7.0. My iMac is just a year old and I believe this version of Preview came in with my recent Mavericks upgrade. Noone uses my computer but me so it hasn't been tampered with. I can live with the lowered security that made Preview open, but it also allows all outside apps to open.
Thanks for the reply.
I guess I didn't really mean actual tampering, but if it wasn't isntalled correctly, it will not be in the correct state to allow it to be recognized.
You should not need to leave the setting like that. If you open it once, it should be remembered.
If it is not, then the only solution I can come up with at this point is to reinstall Mavericks. There isn't a way to download Preview separately.
Reinstalling won't remove your data, but you should still have a good backup before starting.
Thanks, I put the security protection back to default (on) and I can still open the file. Immediate problem solved!
8-)
Instead of using the System Preference setting, you can right-click on a program and choose Open from the contextual menu. It will then warn you that it is from an unidentified developer, but will let you open the app. This way, you don't have to turn the setting off and on all the time.
I have the same prob. I'm trying to open a Kodak program to run the printer from a MacBook Air but the same restruction pops up even after trying your fix ie can't open cos it's not an Apple App. Is there any other route? By the way, I don't get the menu poopping up with the "open" option.
Barney-15E wrote:
Instead of using the System Preference setting, you can right-click on a program and choose Open from the contextual menu. It will then warn you that it is from an unidentified developer, but will let you open the app. This way, you don't have to turn the setting off and on all the time.
Try holding Control+Click on the file you are trying to open - hopefully you'll get the option to 'open'.
Nope. Ends up with same message ultimately - can't open cos it's not a Mac App.
I'm trying to link my Kodak hero 5.1 to my new MacBook Air.
Are you certain you've downloaded the Mac version of the software. rather than for a PC?
Here is what you should see when you right-click. What do you see?
Mavericks: Preview can't be opened because it is from an unidentified developer. I lowered my security in system prefs but how can Apple be an unidentified developer?
