Rendering to a texture via FBO - objective-c

Question

I am trying to apply post processing effects to a small test program for OS X. I am trying to render the image into a texture and then render the texture to the screen (i haven't even gotten to writing a second shader for the final image). My code still just renders a black screen.
Here is the code to create the FBO. It is executed once at the beginning.
-(void)setupFramebuffer{
[self setOpenGLContext:self.openGLContext];
glEnable(GL_TEXTURE_2D);
CGSize textureSize = CGSizeMake(1024, 1024);
glGenFramebuffersEXT(1, &textureFramebuffer);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, textureFramebuffer);
glGenTextures(1, &texture);
textureImage = MFGLImageCreateWithImageID(texture, textureSize);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, textureSize.width, textureSize.height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, texture, 0);
if(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT)
NSLog(#"Failed to create FBO: %i", glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
glBindTexture(GL_TEXTURE_2D, 0);
g_CurrentlyBoundTexture = 0;
glBindFramebufferEXT(GL_FRAMEBUFFER, 0);
}
Here is the rendering code.
- (void)drawRect:(NSRect)dirtyRect
{
glUniform4f(g_OffsetUniform, dirtyRect.size.width/2.0, dirtyRect.size.height/2.0, 1, 1);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, textureFramebuffer);
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
[batchRenderer addFrame:CGRectMake(0, 0, textureImage.size.width, textureImage.size.height) withAlpha:1 forImage:textureImage renderAlpha:YES offset:0 color:[NSColor redColor] renderMode:GL_TRIANGLES];
[batchRenderer finishAndDrawBatch];
glFlush();
}
Right now i am just clearing the FBO buffer and writing a red color to it. Then i pass the image to my batch renderer for rendering, however i still get nothing but a black screen. (The batch renderer is not the issue, the exact same code is used in other programs) Furthermore, when i comment out the code that binds the FBO in the draw method it draws the red without an issue.