Problem With Petpet Lab Ray

[UniKat]

I just bought all nine pieces to the petpet lab ray, then with a disappointing discovery that I can't use it. Why is this? I've gone to the map page and there's supposed to be six links for the six maps right? (original,space,spooky,lab,underwater and petpet) There's only five there, and when i follow a link that I found on ppt it says i should find all the pieces first and I did and i'm frustrated and annoyed.

[Mongrel]

You're supposed to complete the regular laboratory map first.