Thanks for the replies
Ooops, I just made that Dropbox for this reason so I didn't know. Here's the link they give when you click share, and it appears to work when I'm logged out. Also, turns out new users can't use the URL bb code, so I guess this long annoying url will have to do.
@LittleStain - I thought of random image points scattered throughout it, but wasn't sure how to target a specific one. If I remember correctly, I didn't see an option to choose which image point it would path find to.
@ramones - That's actually what I'm doing now. That is working pretty well, except since the zombies all target the origin of the object, they typically end up stacking since they funnel towards to middle as they walk to it.
@Guizmus - That sounds like it may be a solution for this. I'm going to give it a try right now.
I'll post back with any updates, thank you all for your responses.