- Throw Error objects instead of Strings.

mindplot/src/main/javascript/IconGroup.js

@@ -80,7 +80,7 @@ mindplot.IconGroup = new Class({
         }, this);
 
         if (result == null) {
-            throw "Icon can no be found.";
+            throw new Error("Icon can no be found:" + iconModel);
         }
 
         return result;

mindplot/src/main/javascript/LocalStorageManager.js

@@ -47,7 +47,7 @@ mindplot.LocalStorageManager = new Class({
 
                 // If I could not load it from a file, hard code one.
                 if (xml == null) {
-                    throw "Map could not be loaded";
+                    throw new Error("Map could not be loaded");
                 }
 
             }