To avoid force-quitting, try my user tip here; sometimes it helps to quit from the Terminal:
If Aperture is unresponsive, how to avoid force quitting?
If you can get Aperture to quit, try "Repairing" and Repairing permissions next:
When that succeeds, try to launch Aperture again, with the shift key hold down, to prevent the generation of previews. See, if you can get access to the menu bar this way agai.
Did you import new images or videos recently? Maybe you have a corrupted image or video in your library and need to track it down and remove it.
Post back, if you can get access to your Library again.
I used the killall Aperture and it worked.
When I started it back up it had to rebuild the library database, but now it seems to be fine. Thank you so much for this tip! I will try and remember it if I ever have another issue like this.
My library is only 107.7 GB. I'm wondering, tho, if it might be advisable to try and break it up into smaller libraries? I like not having to open and close separate libraries, but maybe it might be a safer option.
You are welcome. I am glad this worked for you.
I like not having to open and close separate libraries, but maybe it might be a safer option.
That is still a moderate size for an Aperture library. It is really not necessary to break it up int several libraries. You will loose a lot of Aperture's powers doing this. It will be impossible to do smart searches involving all your images at once, if the images are distributed over several libraries. Do you have sets of images, that have no connection at all - for example business pictures and private pictures, that will never be used together in a slideshow or an album? Then you can split the library, but otherwise I would not do it.
When your librarie grows, and you are running out of disk space, you might consider to relocate the original images for some of your projects that do no longer need editing to an external drive instead.