Problem with textures slick.util and lwjgl

So, I recently started building a simple 2D java game using jlwgl and slick-util. I ran into a problem when trying to load textures to place on my tiles. I am using slick util to upload and download textures. This is the method I am using for this.

 public static Texture loadTex(String path, String fileType) {
    Texture tex = null;
    InputStream in = ResourceLoader.getResourceAsStream(path);

    try {
        tex = TextureLoader.getTexture(fileType, in);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return tex;
}

      

        
        
        
      

    

Then I set the "t" variable to hold the variable to check if the texture loading is working.

     Texture t = loadTex("res/grass64.png","PNG");

      

        
        
        
      

    

I am using glQUADS method to draw a textured square.

public static void drawQuadTex(Texture tex, float x, float y, float width,
        float height) {
    tex.bind();
    glTranslatef(x, y, 0);

    glBegin(GL_QUADS);
    glTexCoord2f(0, 0);
    glVertex2f(0, 0);
    glTexCoord2f(1, 0);
    glVertex2f(width, 0);
    glTexCoord2f(1, 1);
    glVertex2f(width, height);
    glTexCoord2f(0, 1);
    glVertex2f(0, height);
    glLoadIdentity();
    glEnd();
}

      

        
        
        
      

    

Calling drawQuadTex ...

drawQuadTex(t,0,0,64,64);

      

        
        
        
      

    

I ran into the error:

"Exception in stream" main "java.lang.NoSuchMethodError: org.lwjgl.opengl.GL11.glGetInteger (ILjava / nio / IntBuffer;) V"

I'm not sure what's going on. Any help would be appreciated as this is my first try in any java that is not a simple school assignment. If I need to post anything else, please let me know.