It's definitely not a general issue (Mac or PC), that certainly would have been reported by now (or caught by our alpha test team). Most likely it's a particular asset that you've imported (or attempted to import) into the library. Keep in mind that, even if you haven't used the library before, it is set by default to add items that you load in scenes to the library, so you will probably already have some stuff in there. Sometimes the process of creating thumbnails for some image types or large images can cause problems. So first try deleting your library database in the Preferences, and see if that helps. If so, you can try to add a few items into the library again, and see if it works in a general sense. Then you can try re-adding all your items if you want, and see again if it crashes. If so, you may have to do a trial and error process to narrow down which specific item is causing it.
- Oshyan