Slot Puzzle Generator - Getting Error at Stochastic Aggregation Component

Hi All,

I'm new to grasshopper/wasp and am designing something similar to the below image with customized units that aim to slot together.

I tried having a go with just a simple geometry (rectangle - in green in the below screenshot) and it was fine in generating different stochastic aggregation outputs but when I shift to a slightly more complex geometry (in blue in below screenshot), the component has an error that reads " could not place 28 parts".

I've attached the .gh file with internalized data, any help would be awesome! 

Thanks in advance (: