CorePlot hosting view and CPTXYGraph frame issues - macos

Question

I'm trying to set up a simple pie chart in my OSX project, in Xcode 5, following the tutorial at :http://www.raywenderlich.com/13269/how-to-draw-graphs-with-core-plot-part-1.
The problem is that the graph doesn't show and both the CPTGraphHostingView and the CPTXYGraph have a height and width of 0.00.
Here is the code I use, after which I should be able to see the title for the graph in the view. The hostView is a reference to an NSView in the xib file.
-(void)configureHost {
self.graphHostingView = [(CPTGraphHostingView *)[CPTGraphHostingView alloc] initWithFrame:CGRectMake(0, 0, 1103, 532)];
NSLog(#"%f", self.graphHostingView.frame.size.width);
[hostView addSubview:self.graphHostingView];
}
-(void)configureGraph {
NSRect parentRect = CGRectMake(0, 0, 1103, 532);
//create graph
CPTGraph *graph = [[CPTXYGraph alloc] init];
[graph setFrame:parentRect];
NSLog(#"%f", graph.frame.size.width);
self.graphHostingView.hostedGraph = graph;
graph.paddingBottom = 0.0f;
graph.paddingLeft = 0.0f;
graph.paddingTop = 0.0f;
graph.paddingRight = 0.0f;
graph.axisSet = nil;
//text in graph
CPTMutableTextStyle *textStlye = [CPTMutableTextStyle textStyle];
textStlye.color = [CPTColor grayColor];
textStlye.fontName = #"Helvetica-Bold";
textStlye.fontSize = 16.0f;
//graph title
graph.title = #"Title";
graph.titleTextStyle = textStlye;
graph.titlePlotAreaFrameAnchor = CPTRectAnchorTop;
graph.titleDisplacement = CGPointMake(0.0f, -12.0f);
self.theme = [CPTTheme themeNamed:kCPTPlainWhiteTheme];
}
Not as important, but I'm also getting an error when I use the kCPTPlainWhiteTheme const, or other theme consts. a thread 1:EXC_BAD_ACCESS(code=1, address=0x0).
It's probably an obvious issue but I just cant see it.
Thanks in advance.