Everytime fakeannounce should show up , chat prints "an internal server error occurred ecc.."
Why?
Here is the pastebin (read from bottom to top) http://pastebin.com/0RUntTE9

Looks like you're using a very old version of CraftBukkit.

I'm using 1.7.2 R03 build and I put VNP on the right version.
The 3.19.1 of VNP works with that build, I saw.
Why then?

Perhaps try 3.18.10