I realise this is an old post, but thank you very much for a working AE2 autocrafting script.
I modified it slightly to store the craft result object, so that it can be checked in the next cycle to see if the job is still active or not, and then skip adding a another job if it's still in progress and it's working perfectly in Minecraft 1.12.2, with OpenComputers 1.7.2.67 and Applied Energistics 2 rv5-stable-11
Here is my modified version if anyone is interested:
-- Original by Palagius : https://oc.cil.li/index.php?/topic/1426-ae2-level-auto-crafting/
-- Modfied by Dalden 2018-07