“Adobe Reader cannot be opened because of a problem.
Check with the developer to make sure Adobe Reader works with this version of OS X. You may need to reinstall the application. Be sure to install any available updates for the application and OS X.
Click Report to see more detailed information and send a report to Apple.”
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9-20-2014: Had Mavericks for ~ 1 month. Adobe Acrobat Reader working just fine.
OS X 10.9.4 Got notice to update Acrobat. I did & it failed to update & got the above message! V. 10.1.12. I searched & found Acrobat v. 11.0.07, I trashed/uninstalled Adobe Reader 10.app & also trashed; Adobe Folder containing Acrobat.com.app.
I D/L new Adobe Acrobat Reader v. 11.0.07. It worked fine!
I then upgraded OS X to v. 10.9.5. new Adobe Acrobat Reader v. 11.0.07. Still worked fine! Hours later it failed to launch again with the above error message!
(Crash logs available if needed to solve this)
Now using Mac Preview to open PDF files.
Thanks!