rwaldron
diff --git a/‎app/src/processing/app/Base.java‎
Lines changed: 7 additions & 1 deletion b/‎app/src/processing/app/Base.java‎
Lines changed: 7 additions & 1 deletion
diff --git a/‎app/src/processing/app/Sketch.java‎
Lines changed: 3 additions & 1 deletion b/‎app/src/processing/app/Sketch.java‎
Lines changed: 3 additions & 1 deletion
diff --git a/‎app/src/processing/app/debug/Compiler.java‎
Lines changed: 5 additions & 0 deletions b/‎app/src/processing/app/debug/Compiler.java‎
Lines changed: 5 additions & 0 deletions
@@ -1520,7 +1520,13 @@ static public Target getTarget() {
 
 
   static public Map<String, String> getBoardPreferences() {
-    return getTarget().getBoards().get(Preferences.get("board"));
+    Target target = getTarget();
+    if (target == null) return new LinkedHashMap();
+    Map map = target.getBoards();
+    if (map == null) return new LinkedHashMap();
+    map = (Map) map.get(Preferences.get("board"));
+    if (map == null) return new LinkedHashMap();
+    return map;
   }
 
 
 
@@ -1574,7 +1574,9 @@ public boolean exportApplet(String appletPath, boolean verbose)
   protected void size(String buildPath, String suggestedClassName)
     throws RunnerException {
     long size = 0;
-    long maxsize = Integer.parseInt(Base.getBoardPreferences().get("upload.maximum_size"));
+    String maxsizeString = Base.getBoardPreferences().get("upload.maximum_size");
+    if (maxsizeString == null) return;
+    long maxsize = Integer.parseInt(maxsizeString);
     Sizer sizer = new Sizer(buildPath, suggestedClassName);
       try {
       size = sizer.computeSize();
 
@@ -73,6 +73,11 @@ public boolean compile(Sketch sketch,
     String avrBasePath = Base.getAvrBasePath();
     Map<String, String> boardPreferences = Base.getBoardPreferences();
     String core = boardPreferences.get("build.core");
+    if (core == null) {
+    	RunnerException re = new RunnerException("No board selected; please choose a board from the Tools > Board menu.");
+      re.hideStackTrace();
+      throw re;
+    }
     String corePath;
 
     if (core.indexOf(':') == -1) {