Can Someone help me on this?
Maybe if we knew something about what you are trying to do and what kind of system you have and what version of AE you are using and if AE has ever worked on that system. Without some of that info we can't help.
As Rick says, we need to know a lot more to help you. Please provide answers to the questions listed here:
Provide exact system information and crash details:
Working with your Operating System’s Tools