diff --git a/src/main/java/com/esri/core/geometry/MultiPath.java b/src/main/java/com/esri/core/geometry/MultiPath.java
index f2b80e89..8e778725 100644
--- a/src/main/java/com/esri/core/geometry/MultiPath.java
+++ b/src/main/java/com/esri/core/geometry/MultiPath.java
@@ -653,7 +653,7 @@ boolean hasNonLinearSegments(int pathIndex) {
 	 * @param bReverse
 	 *            Creates reversed path.
 	 */
-	void addEnvelope(Envelope2D envSrc, boolean bReverse) {
+	public void addEnvelope(Envelope2D envSrc, boolean bReverse) {
 		m_impl.addEnvelope(envSrc, bReverse);
 	}
 
diff --git a/src/main/java/com/esri/core/geometry/PairwiseIntersectorImpl.java b/src/main/java/com/esri/core/geometry/PairwiseIntersectorImpl.java
index cb3c5c00..d02cc4fa 100644
--- a/src/main/java/com/esri/core/geometry/PairwiseIntersectorImpl.java
+++ b/src/main/java/com/esri/core/geometry/PairwiseIntersectorImpl.java
@@ -34,7 +34,7 @@ class PairwiseIntersectorImpl {
     private double m_tolerance;
     private int m_path_index;
     private int m_element_handle;
-    private Envelope2D m_paths_query; // only used for m_b_paths == true case
+    private Envelope2D m_paths_query = new Envelope2D(); // only used for m_b_paths == true case
     private QuadTreeImpl m_quad_tree;
     private QuadTreeImpl.QuadTreeIteratorImpl m_qt_iter;
     private SegmentIteratorImpl m_seg_iter;
diff --git a/src/main/java/com/esri/core/geometry/SimpleRasterizer.java b/src/main/java/com/esri/core/geometry/SimpleRasterizer.java
index 27a87351..783b8a8f 100644
--- a/src/main/java/com/esri/core/geometry/SimpleRasterizer.java
+++ b/src/main/java/com/esri/core/geometry/SimpleRasterizer.java
@@ -48,7 +48,7 @@ public class SimpleRasterizer {
 	public static interface ScanCallback {
 		/**
 		 * Rasterizer calls this method for each scan it produced
-		 * @param scan array of scans. Scans are triplets of numbers. The start X coordinate for the scan (inclusive),
+		 * @param scans array of scans. Scans are triplets of numbers. The start X coordinate for the scan (inclusive),
 		 * the end X coordinate of the scan (exclusive), the Y coordinate for the scan.
 		 * @param scanCount3 The number of initialized elements in the scans array. The scan count is scanCount3 / 3. 
 		 */
diff --git a/src/main/java/com/esri/core/geometry/Wkid.java b/src/main/java/com/esri/core/geometry/Wkid.java
index 29b119f5..9fd9cca0 100644
--- a/src/main/java/com/esri/core/geometry/Wkid.java
+++ b/src/main/java/com/esri/core/geometry/Wkid.java
@@ -146,7 +146,7 @@ public static double find_tolerance_from_wkid(int wkid) {
 		if (tol == 1e38) {
 			int old = wkid_to_old(wkid);
 			if (old != wkid)
-				tol = find_tolerance_from_wkid_helper(wkid);
+				tol = find_tolerance_from_wkid_helper(old);
 			if (tol == 1e38)
 				return 1e-10;
 		}
diff --git a/src/test/java/com/esri/core/geometry/TestRelation.java b/src/test/java/com/esri/core/geometry/TestRelation.java
index 10386f82..ec21049d 100644
--- a/src/test/java/com/esri/core/geometry/TestRelation.java
+++ b/src/test/java/com/esri/core/geometry/TestRelation.java
@@ -5481,4 +5481,16 @@ public void testCrosses_github_issue_40() {
 				null);
 		assertTrue(answer2);
 	}
+
+	@Test
+	public void testDisjointCrash() {
+		Polygon g1 = new Polygon();
+		g1.addEnvelope(Envelope2D.construct(0,  0,  10,  10), false);
+		Polygon g2 = new Polygon();
+		g2.addEnvelope(Envelope2D.construct(10,  1,  21,  21), false);
+		g1 = (Polygon)OperatorDensifyByLength.local().execute(g1, 0.1, null);
+		OperatorDisjoint.local().accelerateGeometry(g1, SpatialReference.create(4267), GeometryAccelerationDegree.enumHot);
+		boolean res = OperatorDisjoint.local().execute(g1, g2, SpatialReference.create(4267), null);
+		assertTrue(!res);
+	}	
 }
diff --git a/src/test/java/com/esri/core/geometry/TestWkid.java b/src/test/java/com/esri/core/geometry/TestWkid.java
index fc09a66c..d953ae95 100644
--- a/src/test/java/com/esri/core/geometry/TestWkid.java
+++ b/src/test/java/com/esri/core/geometry/TestWkid.java
@@ -19,4 +19,13 @@ public void test() {
 		assertTrue(Math.abs(tol84 - 1e-8) < 1e-8 * 1e-8);
 	}
 
+	@Test
+	public void test_80() {
+		SpatialReference sr = SpatialReference.create(3857);
+		assertTrue(sr.getID() == 3857);
+		assertTrue(sr.getLatestID() == 3857);
+		assertTrue(sr.getOldID() == 102100);
+		assertTrue(sr.getTolerance() == 0.001);
+	}
+	
 }