Last night, when using the 120mm-s with SharpCap, the intensity curve would not appear when activating the histogram graph. The graph would pop up on demand, but no curve on it. I shut down and reconnected SharpCap several times , but with no results. And checked all the connections. Histogram had worked well in previous sessions, though I do remember the curve not showing up at least once before. Any ideas on what can be causing this? And how to fix it?