Index: lams_central/src/java/org/lamsfoundation/lams/authoring/ObjectExtractor.java
===================================================================
diff -u -r9989381a793053838a3fdf7d96203b8397bdb733 -r959056db777cd0bc1113746b43f0057da4807349
--- lams_central/src/java/org/lamsfoundation/lams/authoring/ObjectExtractor.java	(.../ObjectExtractor.java)	(revision 9989381a793053838a3fdf7d96203b8397bdb733)
+++ lams_central/src/java/org/lamsfoundation/lams/authoring/ObjectExtractor.java	(.../ObjectExtractor.java)	(revision 959056db777cd0bc1113746b43f0057da4807349)
@@ -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;
     }