[Pyros]

Hi,

Actually the installer will just add the official 2.5 US obat and the 2.51 patch has only addressed the winspmbt.exe so by installing the campaign you won't experience any problem.

But in order to be 100% sure about that, you should make a copy of the US OOB obat012.obf located in the oobs folder and then (after LZX-ray installation) you may check if the two US OOB are exactly the same obat.

cheers,
Pyros