What Is The Best Solution To Project Not Opening

Hi, I am using a beta version of unity: 2018.3.0b6

I was working on my project last night and it worked fine, I did some editing and everything appeared fine.

Now the project wont open...
What is the process to follow in general to solve a problem - which I am not sure of the cause.

My backup is the same.

It hangs at 3,500gb memory and then moves very slowly 1 digit at a time.

Any ideas to kick it into gear.

Thanks

 

Can you confirm you mean 3.5GB or 3500 MB Ram? Not 3,500Gb

 

Ah right its 3.5gb

The project runs at between 8 and 11 GB

I have actually discovered that Easy Roads dll file is causing this but not sure how to solve the problem still. I am in touch with Easy Roads 3D developer.

Thanks