Freezing project

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Hello everyone, last time I started making my biggest projec ever. I'm working with it few hours (from 1to 3) everyday by 1 month till today. I wanted open my project again and what ? NOTHING I want press play [program is not responding] I want click anwhere [program is not responding]. What I should do ? Please help me :(
I've also had songs gone corrupted like this but I haven't triaged it yet.
I remember being able to work around it but I don't remember how at this moment, I'll have to get back to you on this.
Try muting all instruments and just play or export one track.
Uff... I repaired it. I was using 3rd party plugins (Blue Cat set) and this was fault. I just removed this and everything is ok :D