Essentia Refill System

Hey guys.
I'm currently trying to automate my thaumcraft room.
I want something similiar to the jar refill system direwolf20 in his season on 1.6.4
I tried to find something on youtube/google but it seems like nothing works on 1.7.10

The codes i'm currently using are:
pastebin get 18pB7QM9 button
pastebin get R4cf3Bd1 essentia

after changing some variables to match my system and starting the codes i just get:

Java exception thrown

I'm new to all that lua stuff and i'm still learning.
But i have absolutly no idea what causes that problem.
I hope anyone here can help me to fix this problem.

Sorry for my bad english, i hope its not to hard to understand.

I would suggest adding prints throughout the code to attempt to narrow down exactly where it is erroring.

I can tell you with reasonable certainty that it'll be one of the peripheral functions. I'm not 100% sure, but I've only seen that error when various types of peripheral have messed up (due to being called incorrectly, for eg).

Using unique print statements to work out which line is triggering the problem would be a good start.

If you are using Thaumic Tinkerer (And by your code I beleve you are) I think I might know what the problem is.
I remember trying to write a program for an essentia graph and when I tried to use getAspects() on an empty container, It would throw back and error and crash the program out. I was able to get around this by making a table of all the essentia and using a loop that used getAspectCount() to check if the container has more than 0 of any aspect.

Hey guys.
Thank you for your answeres.
Because i'm new in lua and the code i'm trying to use is not mine,
its almost impossible for me to get an overview of it.
Because of that i dont realy know how to find the problem with prints.
@Quintuple Agent:
I just checked everything and all jars are filled so this cant be the problem :(/>
I hate errors that dont give any informations.. :x

Hey,
I'm new to programming but I think I know what the problem is. The problem is here:
29 asp = peripheral.call(j, "getAspects")
30 countasp = peripheral.call(j, "getAspectCount", asp)
It gets the error "Java exception Thrown" when it tries to put in "asp" in the getAspectCount command.
I don't know how to fix this problem but I hope I could help you.