Sorry, but no one can help unless you volunteer useful information. When you are sick and go to the doctor, you don't tell him/her simply that you are sick, you give information that can help diagnose the problem. It is the same thing with computers.
We need to know what system you are on (Windows, Mac, Linux?), we need crash logs,see here
https://forum.cockos.com/showthread.php?t=36653 and more... But start with that and we'll see if someone can get something out of it.