run DevP.bat ( well dont)
There is no correlation between P:drive that is created and the tools if your Game is not on C:\
Whilst there is some description its inadequate and when followed matioulasly you will still have problems with Paths of textures from o2 placing P: or not or placing the real drive g:\
Major problem is and maybe a massive loophole , the Game actually seems to be able to read a texture on P:\ so some released addons may break beause the downloader will not have a P:\
i noticed BIS themselves are a victim of this same error too as they use o:\ and we get Errors
o:\arma3\a3\anims_f_epa\data\anim\sdr\cts\hubcleaned\wave\hubwave_move1.rtm not found or empty
Obviously BIS are not aware of this error ( or the DEV ) because on your end you have an O:\