Chipmunk Physics

I implemented the cpMouse code into my project. There are no errors or warnings, but when I run the program it quits and the console reads "Assertion fail: (body != NULL), function cpShapeInit."
Here is my code:
extern void makeStaticBox(float x, float y, float width, float height);
cpSpace *space;
cpBody *staticBody
...
Sprite *Block1 = [[Sprite spriteWithFile:@"1x1.png"] retain];
Block1.position = cpv(160,240);
[self addChild: Block1];

cpVect verts[] = {
cpv(-36,-36),
cpv(-36, 36),
cpv(36, 36),
cpv(36,-36),
};

cpBody *Block1Body = cpBodyNew(50.0f, INFINITY);
Block1Body->p = cpv(160,240);
Block1Body->v = cpv(0, 0);

cpSpaceAddBody(space, Block1Body);

cpShape * Block1Shape = cpPolyShapeNew(Block1Body, 4, verts, cpvzero);
Block1Shape->e = 0.9f;
Block1Shape->u = 0.9f;
Block1Shape->data = Block1;
Block1Shape->collision_type = 0;
cpSpaceAddShape(space, Block1Shape);
CGSize s = [[Director sharedDirector] winSize];
int margin = 4;
int dmargin = margin*2;
makeStaticBox(margin, margin, s.width - dmargin, s.height - dmargin); //This references a static box the size of the window in a C class.
}
return self;
}
Please help!

Can't you get a stack trace? That would help. You are calling Hmmmm, and you haveWhere does that get set up and referenced?

The cpBody *staticBox is referenced in the static box created in another class. Here is the code:
extern cpSpace* space;
extern cpBody *staticBody;

void makeStaticBox(float x, float y, float width, float height){
cpShape * shape;
shape = cpSegmentShapeNew(staticBody, cpv(x,y), cpv(x+width, y), 0.0f); //Specifically Here
shape->e = 1.0; shape->u = 1.0;
cpSpaceAddStaticShape(space, shape);

shape = cpSegmentShapeNew(staticBody, cpv(x+width, y), cpv(x+width, y+height ), 0.0f);
shape->e = 1.0; shape->u = 1.0;
cpSpaceAddStaticShape(space, shape);

shape = cpSegmentShapeNew(staticBody, cpv(x+width, y+height), cpv(x, y+height ), 0.0f);
shape->e = 1.0; shape->u = 1.0;
cpSpaceAddStaticShape(space, shape);

shape = cpSegmentShapeNew(staticBody, cpv(x, y+height ), cpv(x, y), 0.0f);
shape->e = 1.0; shape->u = 1.0;
cpSpaceAddStaticShape(space, shape);
}
Thanks! I am working on a stack trace.

Still don't see the code where you set up staticBody i.e. you callbut that will crash unless staticBody has been created i.e. staticBody will be NULL so the assert will trigger.

Thanks so much!