Welcome to the forums.
You really need to post more information! I don't know exactly what version of OSX, Logic or 3rd party plugins you are using. What about your audio interface and other hardware connected?
What about the project... does it have any 3rd party plugins?
If you navigate tot he project folder you should find some backup project files. Do these also crash Logic?
Do all other projects work fine?
Have you installed anything on your Mac since you last opened the project successfully?