Index: lams_central/src/java/org/lamsfoundation/lams/authoring/ObjectExtractor.java
===================================================================
diff -u -r0a14356a02bd1eafd448340a569b0504c09264fb -r8dfc912013b6f3ec9a7b5bc2e7d19407c914bb3f
--- lams_central/src/java/org/lamsfoundation/lams/authoring/ObjectExtractor.java	(.../ObjectExtractor.java)	(revision 0a14356a02bd1eafd448340a569b0504c09264fb)
+++ lams_central/src/java/org/lamsfoundation/lams/authoring/ObjectExtractor.java	(.../ObjectExtractor.java)	(revision 8dfc912013b6f3ec9a7b5bc2e7d19407c914bb3f)
@@ -1931,7 +1931,9 @@
     }
 
     private Integer getCoord(JSONObject details, String tag) throws JSONException {
-	Integer coord = ((Number) JsonUtil.opt(details, tag)).intValue();
+	// the coordinate can be Integer or Double in JSON, need to be ready for any
+	Number number = (Number) JsonUtil.opt(details, tag);
+	Integer coord = number == null ? null : number.intValue();
 	return (coord == null) || (coord >= 0) ? coord : ObjectExtractor.DEFAULT_COORD;
     }