Why doesn't adding Waveforms with compound arithmetic work?

Hello everyone,
I have a program that adds up multiple waveforms and displays them all together as one distorted curve in a single waveform graph.    
I've had to add them all together using simple add functions, since the compound arithmetic block doesn't work. 
Why would this be the case? Isn't it essentially just doing multiple additions in a convinient way? I've attached a VI with a simple example to show what I mean.
fr00tcrunch
Solved!
Go to Solution.
Attachments:
simple waveform addition.vi ‏33 KB

1.  No need to wire up the N.  The autoindexing will tell how many iterations to perform.
2. Use Delete From Array to remove one of the waveforms from the array.  Initialize the shift register with the deleted portion.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
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Attachments:
waveform addition shift registers_BD.png ‏18 KB

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