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jmcleary Level 1 Level 1

Upgraded to Mountain Lion yesterday and lost the mosaic screensaver that used my iPhoto pics.  How do I get it back?  Thanks.

iMac, OS X Mountain Lion
Solved by Ferd II on Jul 28, 2012 12:54 PM Solved
JM, Unfortunately, Mosaic is no longer a screen saver option with Mountain Lion. It was also a favorite of mine.
  • Frost Byte Level 1 Level 1

    Were you using a third-party application to make the mosaic screensaver? If so, the first thing you should do is run a software update or look for a similar program that is compatible with Mountain Lion.

  • jmcleary Level 1 Level 1

    Thanks.  I thought it was an option in the previous OS (Snow Leopard?).  It just appeared as my screensaver when I bought my iMAC.  I have not used a 3d-party screensaver program.  Am I nuts?

  • Frost Byte Level 1 Level 1

    I think that actually might be a feature in iPhoto. Try reading this:

  • jmcleary Level 1 Level 1

    The article deals with Leopard OS.  The System Preferences>Desktop Screensaver in Lion doesn't have the same choices as shown in the article.  Not the answer, as far as I can tell.  I've seen several answers in other threads that lead me to believe that Lion may have screensaver glitsches that will need to be corrected.  Thanks.

  • Frost Byte Level 1 Level 1

    I just thought there might be some similarities in iPhoto's past version to its new one.

  • Ferd II Level 7 Level 7



    Unfortunately, Mosaic is no longer a screen saver option with Mountain Lion.


    It was also a favorite of mine.


  • jmcleary Level 1 Level 1

    Thanks.  I was coming to that conclusion but I appreciate your confirmation.  Thanks to Frost Byte as well for all the help.  Maybe Apple will include mosaic in a fix along the way.

  • Nobecutan Level 1 Level 1

    Hi, I found a solution however it's rather a hack and I don't know the implications… The screensaver is located under /System/Library/Frameworks/ScreenSaver.framework You can replace this folder with the folder of a Mac OS Lion installation. You will have to replace the preference pane (/System/Library/PreferencePanes/DesktopScreenEffectsPref.prefPane) as well.


    Don't forget to make backups before you replace anything!



  • jmcleary Level 1 Level 1

    BR,  Thanks for the info...unfortunately (for me) I'm not sophisticated enough to start hacking Lion (or any other software for that matter).  In fact, I only vaguely understood what you were suggesting.  I'll hold out hope that Apple puts mosaic back in the next update of Lion and continue to wish I had a clue how to avail myself of the expertise exhibited in response to my question.  Jim

  • Roland Dietz Level 1 Level 1

    works perfek 4 me. thank you.



    thanks time machnie i got the lion settings

  • ramiek65 Level 1 Level 1

    Hi, I'm glad there seems to be a working solution to get back the mosaic screensaver, but is it still possible to let Apple do the updates after replacing the two maps?



  • phlampe Level 1 Level 1

    Thanks for the tip, it worked perfectly for me. I got the 10.7 versions of the Screensaver from my TimeMachine backup.


    Btw, I will keep a copy of those 10.7 versions elsewhere in case a future 10.8 update replaces them with a new screensaver.


    And I agree with the rest of us: I don't understand why Apple removed this mosaic effect: it's so great to have it running on the computer screen in our living room :-)




  • crazy_ivan Level 1 Level 1

    Can someone please elaborate on replacing these files to reinstall Mosaic? Would be greatly appreciated!

  • crazy_ivan Level 1 Level 1

    I tried this method entering into time machine to my SL and replaced the two files listed above. Upon opening the system preferences and when I try to enter the desktop/screen saver I receive athis dialog box...




    The information given me is that an open system preference may be running in cmpatibility mode and that when I quit the SP it restarts in 64 bit mode. Problem is that when I reopen the SP and select screen savers I get this...SS2.jpg.jpg



    Notice that desktop and screen saver is both greyed. If I click screen saver nothing happens. Any ideas? I'd like to get this back.

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