UTF8String error in SDK_v3-2-0-0_SDK

I upgraded my all client to 3-2-0-0

I can send and receive UTF8String well at older version.
But now I can't send and receive any UTF8Strings.

Client just freezes and breaks at
ExitGames::Common::UTF8String::utf8sizeForLen function.

It can be easily tested with like this.
In Photon demo_realtime's CPhotonLib.cpp's sendData function

// switch over different data types
switch(eventCode)
{
// game-related position information of local player
case(EV_MOVE):
ev.put(STATUS_PLAYER_POS_X, mpSample->player[0].x);
ev.put(STATUS_PLAYER_POS_Y, mpSample->player[0].y);
ev.put(STATUS_PLAYER_NAME, "아이폰");
break;
case(EV_PLAYERINFO):
ev.put(STATUS_PLAYER_NAME, mpSample->player[0].username);
ev.put(STATUS_PLAYER_COLOR, mpSample->player[0].getColor());
break;
}

if I add one line of sending UTF8String program freezes.

Please, fix this quickly, it's urgent.
Thanks.