W.A.R stops working after few days.

[Akila]

I am sure it's not the script that has issue, but probably other element that effects the functionality of the script..
is there a debug level I can turn on or any Log file, etc. i can review that might give me us a hint what on what part the script is hanging on when it stops working?
any suggestion on how I can get to the bottom of the issue? is there a debug mode i can run and it will show me what line it fails, etc.?
any suggestion is blessed.