How to deal with this error 1073741819 in abaqus

I know it's common thing but how do i go about fixing this

Abaqus Error: The executable standard.exe aborted with system error code 1073741819.

Please check the .dat, .msg, and .sta files for error messages if the files exist.  If there are no error messages and you cannot resolve the problem, please run the command "abaqus job=support information=support" to report and save your system information.

What are the steps? 

Code error? how do i see and correct them? I have two subroutines combined into one, both work fine independently

Does this have to do with any specific mistake or could be anything?

Please enlighten me