I don't understand, the graph is showing but it looks terrible.

When I say the amp has been calibrated to reference I mean using internal test tones and setting trim controls so that each speaker is hitting 75 dB's at the listening position.
Boy oh boy, this is getting difficult. I just tried doing a loop check with my sound card (just to make sure everything was ok) and I'm finding that extremely difficult to complete for some reason. This was something I competed a while back but now it seems like there are additional problems.
Loop back graph to show sound card result. I am using the left sound card connection but the box is unchecked. If I check the left sound card connection in REW it automatically goes to the right.
Here is the graph :