when trying to install LibreOffice_5.0.5_MacOS_x86-64_langpack_ru.dmg ,
I see the "Unidentified developer" error in OS X 10.11.4.
Are your language packs signed with a valid digital signature?
See the answer in https://ask.libreoffice.org/en/question/27774/osx-maverick-unidentified-developer/
Have you tried right-clicking the app, and then choosing 'Open'? That is the basic small step to open apps from unidentified developers introduced with OSX 10.7 or 10.8. If that doesn't help, setting the security option in the system preferences for allowed software to "all sources (App Store, identified developers and unidentified developers)" should do the trick.
(In reply to Tele from comment #0)
> when trying to install LibreOffice_5.0.5_MacOS_x86-64_langpack_ru.dmg ,
> I see the "Unidentified developer" error in OS X 10.11.4.
> Are your language packs signed with a valid digital signature?
The answer to that question is "No, the lang-packs are not signed." You need to bypass Gatekeeper security in order to install them. Then when you restart LO, you also need to do so via the Open context menu at least the first time, as installation of the lang-packs modifies the bundle and will trigger Apple's "the file is damaged, put it in the bin", bla message.
setting to new. Workaround as Alex explained looks weird for me, but I'm not familiar with OSX, so revert my decision if I'm wrong.
*** This bug has been marked as a duplicate of bug 93331 ***