Greetings. First time posting here. I'm fairly new with OpenGL and am having a devil of a time trying to get glDrawElements to work. I am using 3.2 Core to attempt to draw a simple multicolored triangle. When I use the glDrawArrays method as specified in the code below the triangle displays. When I comment that out and use the glDrawElements method nothing is displayed. I have to use a vertex array object because I am running this on Mac OS X. I had also checked for glerrors and did not have any. Any help would be greatly appreciated!

Code :
GLfloat vertices[] = {	-0.3f, 0.5f, -1.0f,
    -0.8f, -0.5f, 0.0f,
    0.2f, -0.5f, 0.0f };
GLfloat colours[] = {	1.0f, 0.0f, 0.0f,
    0.0f, 1.0f, 0.0f,
    0.0f, 0.0f, 1.0f };
GLuint indices[] = {0,1,2};
// two vertex array objects, one for each object drawn
unsigned int vertexArrayObjID;
// three vertex buffer objects in this example
unsigned int vertexBufferObjID[3];
GLuint indexBufferID;
static void initOpenGL()
    // Allocate Vertex Array Objects
    glGenVertexArrays(1, &vertexArrayObjID);
    // Setup first Vertex Array Object
    glGenBuffers(2, vertexBufferObjID);
    // VBO for vertex data
    glBindBuffer(GL_ARRAY_BUFFER, vertexBufferObjID[0]);
    glBufferData(GL_ARRAY_BUFFER, 9*sizeof(GLfloat), vertices, GL_STATIC_DRAW);
    glVertexAttribPointer((GLuint)0, 3, GL_FLOAT, GL_FALSE, 0, 0);
    // VBO for colour data
    glBindBuffer(GL_ARRAY_BUFFER, vertexBufferObjID[1]);
    glBufferData(GL_ARRAY_BUFFER, 9*sizeof(GLfloat), colours, GL_STATIC_DRAW);
    glVertexAttribPointer((GLuint)1, 3, GL_FLOAT, GL_FALSE, 0, 0);
    glGenBuffers(1, &indexBufferID);
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBufferID);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, 9 * sizeof(GLuint), indices, GL_STATIC_DRAW);

Code :
static void drawAnObject()
	GLfloat modelView[16];
	glUniformMatrix4fv(modelViewUniformIdx, 1, GL_TRUE, modelView);
	glBindVertexArray(vertexArrayObjID);	// First VAO
	glDrawArrays(GL_TRIANGLES, 0, 3);	// draw first object
//    glDrawElements(GL_TRIANGLES, 3, GL_UNSIGNED_SHORT, 0);