It might help, perhaps, if I had a better idea of what you are trying to do, because there might be a completely different solution that would let you avoid the Zooby pool script. I'm missing some basic information. At the least:
1. What's a "dirt box"?
2. What is the Zooby pool script supposed to do, and why would you put it into a dirt box?
A dirt box is similar to a sand box but with dirt...since little boys like to play in dirt with their trucks and cars and get all muddy....
The zooby pool script calls the zooby babies to interact with the pool...but the script is also used in different toys if you don't mind the splashing of water sounds and the only way that you can actually call the babies to the toys to actually interact with them to help them grow and boost their knowledge...that is why the scripts are used. I just cannot for the life of me figure out why when you put the script in....even last that the prim or even linked prims disappears.