Thread: string question

I am trying to load a file using a string as a file name. This is the class that uses the string to load in the file.

Code:

class Texture
{
	int m_width;					//width of the image
	int m_height;					//height of the image

	unsigned char* m_pixels;		//pixel data
public:
	Texture(std::string fileName);
	~Texture();

	int getWidth();
	int getHeight();

	unsigned char* getPixels();
};

In the fuction for the drawer class, I create a new Texture, and supply a string for the file to load in. (only related code posted). m_currentLevel is a Level class.
getFloorTexName() simply returns the string of the filename used for the floor texture.

Code:

std::string texName = m_currentLevel->getFloorTexName();
Texture* texture = new Texture(texName);
GLuint ID = loadTexture(texture);

Using this code, the program compiles just fine, but I get this error when I run it.
Access violation reading location 0x00000018.
The compiler is pointing to this function in the <xstring> header file.

Code:

size_type size() const
{	// return length of sequence
         return (this->_Mysize);
}

Am I not using the string class correctly? What is causing this error?