[devicenull]

See? That makes it so much easier. You are never setting pInfo.

You need something like

 pInfo= m_PlayerInfo->GetPlayerInfo(pEntity);

It's crashing because pInfo is null and you are trying to call functions on it.

[sslice]

Hmm, you need a valid pointer to IServerGameClients before using it.

[L. Duke]

You need a valid pointer to the server game clients interface instead of just creating a pointer that doesn't point anywhere.

First declare a gameclients pointer in your plugin (either a global variable or in your class header):

IServerGameClients *m_ServerClients;

Then when your plugin loads get a pointer like you do for the engine pointer:
using Metamod: Source

strcpy(iface_buffer, INTERFACEVERSION_SERVERGAMECLIENTS);
FIND_IFACE(serverFactory, m_ServerClients, num, iface_buffer, IServerGameClients *);

using the Valve Server Plugin interface

m_ServerClients = (IServerGameClients *)interfaceFactory(INTERFACEVERSION_SERVERGAMECLIENTS,NULL));

EDIT: I haven't tested it, but you might need to use gameServerFactory instead of interfaceFactory. Check for a valid pointer [ if(m_ServerGameClients) ] from each one to determine which is correct.


Then try your test command again:

if(FStrEq(pcmd,"jean"))
    {
        Warning("deadflag = %d\n", m_ServerClients->GetPlayerState(pEntity)->deadflag);
    }