Issue with return value of a method that returns CString

Hi all,

i am using a method that returns a CString. I am not able to set the Return value for that method using WHEN_CALLED.

Here is the sample code:
#include"stdafx.h"
#include <Isolator.h>
#include "gtest/gtest.h"

class CIniFileStub
{
public:

CString GetValueTest1()
{
return "Test1";
}
};

class SampleTesting : public ::testing::Test
{
public:
virtual void TearDown()
{
ISOLATOR_CLEANUP();
}
};

TEST_F(SampleTesting,test1)
{
CIniFileStub * fakeIniFile=FAKE<CIniFileStub>();
CString param1("GeneralInformation");
WHEN_CALLED(fakeIniFile->GetValueTest1()).ReturnPtr(&param1);
CString temp=fakeIniFile->GetValueTest1();
}

This gives an SEH exception .The exact error is:
SEH exception with code 0x0000005 thrown in the test body.
Please help.
Thanks in advance!!