How to restore unity after crash of 'Too many heap' error?

Unity Engine
1

I revised some script and then saved, click unity editor, normally it should compile, but it stop with message window says,

‘Too many heap sections’

Then crashes,

Real problem is, I tried re-launch unity again, [Importing Assets : Compiling scripts…] bar appears, but does not start.

[solved]

2

move away suspicious script to another folder and can load project, then copy paste from former script solves.