Answers.Body: <p>Apple have released a recent update to FCPX, 10.2.3 which fixes lots of issues like this. I would recommended this update first as it has solved crashing issues for me.</p>
  
  <p><a href="https://support.apple.com/en-gb/HT201237" rel="nofollow">https://support.apple.com/en-gb/HT201237</a></p>
  
  <p>Sometimes FCPX doesn't like it when your library is saved separately to user/movies/ perhaps try moving the library there and see if it helps. </p>
  
  <p>Also media from multiple drives can cause issues if FCP get's stuck trying to link some. If any media is stored on external drives, are they fast drives i.e. thunderbolt, USB3, firewire 800? Potentially FCPX is getting stuck trying to locate the media and can't connect to everything properly. Perhaps try moving media to a reliable drive to try it out like your system drive.</p>
  
  <p>Hope that helps.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-02-10T17:43:20.007Z
Answers.LastActivityDate: 2016-02-10T17:43:20.007Z
Answers.UserDisplayName: Simon Allinson
Answers.Body: <p>This could be caused by a 3rd party plugin, something library specific such as a very large resolution images or corrupt file, or corrupted preference file.</p>
  
  <p>Try opening FCPX while holding the option key to eliminate the possibility there is a corrupted preference file. </p>
  
  <p>If that doesn't work, please let us know the your version of FCPX and what kind of media is in your library and see if we can get some more clues.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-12T17:20:09.857Z
Answers.Text: I'm running Final Cut Pro 10.2.2 (269216) , Application Specific Information:
  *** setObjectForKey: object cannot be nil (key: 5C83DF82-CD3B-499C-A92A-E450CB80B0D5)
  abort() called , i tried opening up with holding option it does open up the library but when choosing any project it crashes
Answers.UserDisplayName: Amr Saleh
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-12T17:28:23.733Z
Answers.Text: Are there any large images or video files in the project, or any unusual media? And by large I mean larger than 4k.
Answers.UserDisplayName: screaming drills
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-09T04:29:05.737Z
Answers.LastActivityDate: 2015-10-09T04:29:05.737Z
Answers.UserDisplayName: screaming drills
Body: <p>I'm trying to open up a library in Final Cut Pro , it used to work fine and now everytime i open it up it crashes the entire application , 
  I have a Mac Pro running Yosemite , i tried multiple solutions as restoring it from a back up everytime i load it crashes i even tried going back 6 months ago and still it crashes , 
  when i open a new library from scratch it works fine 
  the only thing i didnt try is to remove the application and reinstall it , but i dont think doing that will help , please assist 
  Thanks !!!</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-11-09T17:22:24.613Z
Comments.Text: See my answer on this question:  http://video.stackexchange.com/questions/12898/fcpx-crashes-again-and-again/12907#12907
Comments.UserDisplayName: Jason Conrad
Tags: <final-cut-pro><final-cut-pro-x>
Title: Final Cut Pro X crashing
UserDisplayName: Amr Saleh
ThreadText: # Final Cut Pro X crashing
  
  (Asked by: username_0 on 2015-10-08)
  
  I'm trying to open up a library in Final Cut Pro , it used to work fine and now everytime i open it up it crashes the entire application ,
  I have a Mac Pro running Yosemite , i tried multiple solutions as restoring it from a back up everytime i load it crashes i even tried going back 6 months ago and still it crashes ,
  when i open a new library from scratch it works fine
  the only thing i didnt try is to remove the application and reinstall it , but i dont think doing that will help , please assist
  Thanks !!!
  
  **Tags:** final-cut-pro, final-cut-pro-x
  
  > **Comments:**
  > **username_1**: See my answer on this question:  http://video.stackexchange.com/questions/12898/fcpx-crashes-again-and-again/12907#12907  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2016-02-10. Score: 1 | Accepted answer
  
  Apple have released a recent update to FCPX, 10.2.3 which fixes lots of issues like this. I would recommended this update first as it has solved crashing issues for me.
  
  <https://support.apple.com/en-gb/HT201237>
  
  Sometimes FCPX doesn't like it when your library is saved separately to user/movies/ perhaps try moving the library there and see if it helps.
  
  Also media from multiple drives can cause issues if FCP get's stuck trying to link some. If any media is stored on external drives, are they fast drives i.e. thunderbolt, USB3, firewire 800? Potentially FCPX is getting stuck trying to locate the media and can't connect to everything properly. Perhaps try moving media to a reliable drive to try it out like your system drive.
  
  Hope that helps.
  
  
  ---
  
  ### Answer by username_3 on 2015-10-09. Score: 0
  
  This could be caused by a 3rd party plugin, something library specific such as a very large resolution images or corrupt file, or corrupted preference file.
  
  Try opening FCPX while holding the option key to eliminate the possibility there is a corrupted preference file.
  
  If that doesn't work, please let us know the your version of FCPX and what kind of media is in your library and see if we can get some more clues.
  
  > **Comments:**
  > **username_0**: I'm running Final Cut Pro 10.2.2 (269216) , Application Specific Information: *** setObjectForKey: object cannot be nil (key: 5C83DF82-CD3B-499C-A92A-E450CB80B0D5) abort() called , i tried opening up with holding option it does open up the library but when choosing any project it crashes  
  > **username_3**: Are there any large images or video files in the project, or any unusual media? And by large I mean larger than 4k.  
  
  ---
  
  