Preferences file location:
Once you find the file, it can be deleted like any other file, but consider renaming it instead, so in case it doesn't help, you can rename it back..
Quit Lightroom first!
thanks for your reply. When I tried this, I got to "users, user name" and then under my user name, there is not listing for library. I have "applications, desktop, documents, downloads, MR Suite resources, movies, music, pictures, public, utb.uid......
Do you have any other suggestions for how I can get to the library to delete the preferences file? I am using Mac Mavericks. Thanks.
The first Note under the Mac OS X section says that the Library file is hidden and tells how to see it. Have you done this?