small fix (hopefully)

src/ac/ed/lurg/country/gams/GamsRasterOptimiser.java

@@ -129,6 +129,9 @@ public class GamsRasterOptimiser {
 			double prevForestToNaturalFraction = (prevNatural > 0) ? prevForestTotal / prevNatural : 0;
 			double prevForestManagedFraction = (prevForestTotal > 0) ? prevManagedForest / prevForestTotal : 0;
 			
+			if(prevForestToNaturalFraction > 1.0) prevForestToNaturalFraction = 1.0;
+			if(prevForestManagedFraction > 1.0) prevForestManagedFraction = 1.0;
+			
 			//this tries to honour spatial distribution of protected areas, force removal of pasture and cropland from protected areas 
 			if (ModelConfig.FORCE_PROTECTED_AREAS && year >= ModelConfig.FORCE_PROTECTED_AREAS_START_YEAR) {
 				double protectedLandShortfall = 0;

src/ac/ed/lurg/landuse/LandUseItem.java

@@ -239,10 +239,12 @@ public class LandUseItem implements InterpolatingRasterItem<LandUseItem>, Serial
 	}
 	
 	public void setLandCoverArea(LandCoverType c, double d) {
-		if (Double.isNaN(d) || Double.isInfinite(d) || d < 0)
+		if (Double.isNaN(d) || Double.isInfinite(d))
 			throw new RuntimeException("AreasItem for " + c + " is " + d);
+
+		double landCover = (d < 0.0) ? 0.0 : d;
 		
-		landCoverAreas.put(c, d);
+		landCoverAreas.put(c, landCover);
 	}
 	
 	public double getTotalLandCoverArea() {