diff --git a/MUNGA_L4/L4VB16.cpp b/MUNGA_L4/L4VB16.cpp
index 9f4c268..85762f5 100644
--- a/MUNGA_L4/L4VB16.cpp
+++ b/MUNGA_L4/L4VB16.cpp
@@ -5169,6 +5169,25 @@ Logical SVGA16::Update(Logical forceAll)
 			//No MFDs to draw, break out early. The sweep counter resets
 			//too: leaving it part-used would keep the renderer in its
 			//copy phase, and it never draws another gauge while there.
+			//
+			// The ROTATION has to step on the way out as well, and did
+			// not. It lives at the END of this function, so returning
+			// from here parked mDisplayToUpdate on the display we cannot
+			// service - and a station with no MFD ports can never
+			// service it, so the counter stopped dead the first time it
+			// landed there. Display 0's copy, which is the map, then
+			// never ran again: a Live Cam, whose cameraInit page
+			// configures the secondary port and nothing else, kept
+			// whatever the one early pass had put on the pane. A blank
+			// map, because nothing had registered with the renderer that
+			// early, beside a score frozen at its opening value - while
+			// the canvas underneath went on being drawn perfectly, which
+			// is what made this so hard to see.
+			mDisplayToUpdate++;
+			if (mDisplayToUpdate >= NUMGAUGEWINDOWS)
+			{
+				mDisplayToUpdate = 0;
+			}
 			mDisplaysCopiedThisPass = 0;
 			return False;
 		}
@@ -5181,7 +5200,13 @@ Logical SVGA16::Update(Logical forceAll)
 			secPalette = &((SVGA16 *) secPort->graphicsDisplay)->palette[secPort->paletteID];
 		} else
 		{
-			//No secondary, skip - and end the sweep, as above.
+			//No secondary, skip - and end the sweep, as above, stepping
+			//past the display we cannot service for the same reason.
+			mDisplayToUpdate++;
+			if (mDisplayToUpdate >= NUMGAUGEWINDOWS)
+			{
+				mDisplayToUpdate = 0;
+			}
 			mDisplaysCopiedThisPass = 0;
 			return False;
 		}