i have used a great script for rockcrabs for two - three days, and about half an hour ago every time i start it, it runs for about 2 seconds then stops, i have also tried on another script i have so i dont think its the script

 

https://gyazo.com/c453cb9ad2a491c8373ed2576378ed75

Choose another walker to see if that helps

Also check the error logs

Can you show the debug?

Czar's crab script has been NPE'ing for people in the chatbox, open the debug logger and post the code it gives you on his thread

will do thanks for the help guys :P

This is likely script specific I think. PM the owner.