nanoDLP

I need to add a script to do something after the print is complete but it looks like all the external calls I am making now result in this error message. I know this use to work and the pi was rebooted recently. Running build 1556. I even tried something simple like: [[Exec echo 5 > /home/pi/test.txt]]

2017/07/04 22:06:59.947857 {"Layer":"1","module":"Gcode","level":"Error","msg":"External Call Problem fork/exec /bin/sh: cannot allocate memory"}