diff --git a/src/main/java/jace/assembly/AcmeCompiler.java b/src/main/java/jace/assembly/AcmeCompiler.java
index 8990541..7de9c98 100644
--- a/src/main/java/jace/assembly/AcmeCompiler.java
+++ b/src/main/java/jace/assembly/AcmeCompiler.java
@@ -24,7 +24,8 @@ public class AcmeCompiler implements CompileResult<File> {
 
     boolean successful = false;
     File compiledAsset = null;
-    Map<Integer, String> errorsAndWarnings = new LinkedHashMap<>();
+    Map<Integer, String> errors = new LinkedHashMap<>();
+    Map<Integer, String> warnings = new LinkedHashMap<>();
     List<String> otherWarnings = new ArrayList<>();
     List<String> rawOutput = new ArrayList<>();
 
@@ -39,8 +40,13 @@ public class AcmeCompiler implements CompileResult<File> {
     }
 
     @Override
-    public Map<Integer, String> getErrorsAndWarnings() {
-        return errorsAndWarnings;
+    public Map<Integer, String> getErrors() {
+        return errors;
+    }
+
+    @Override
+    public Map<Integer, String> getWarnings() {
+        return warnings;
     }
 
     @Override
@@ -101,11 +107,33 @@ public class AcmeCompiler implements CompileResult<File> {
             restoreSystemOutput();
             System.setProperty("user.dir", oldPath);
         }
-        String output = baosOut.toString();
-        String errors = baosErr.toString();
-        System.out.println("output: "+output);
-        System.out.println("error: "+errors);
-        
+        rawOutput.add("Error output:");
+        extractOutput(baosErr.toString());
+        rawOutput.add("");
+        rawOutput.add("------------------------------");
+        rawOutput.add("Standard output:");
+        extractOutput(baosOut.toString());
+    }
+
+    public void extractOutput(String output) throws NumberFormatException {
+        for (String line : output.split("\\n")) {
+            rawOutput.add(line);
+            int lineNumberStart = line.indexOf(", line") + 6;
+            if (lineNumberStart > 6) {
+                int lineNumberEnd = line.indexOf(' ', lineNumberStart+1);
+                int actualLineNumber = Integer.parseUnsignedInt(line.substring(lineNumberStart, lineNumberEnd).trim());
+                String message = line.substring(lineNumberEnd).trim();
+                if (line.startsWith("Error")) {
+                    errors.put(actualLineNumber, message);
+                } else {
+                    warnings.put(actualLineNumber, message);
+                }
+            } else {
+                if (line.trim().length() > 1) {
+                    otherWarnings.add(line);
+                }
+            }
+        }
     }
 
     public void restoreSystemOutput() {
diff --git a/src/main/java/jace/ide/CompileResult.java b/src/main/java/jace/ide/CompileResult.java
index db88503..0b01e8e 100644
--- a/src/main/java/jace/ide/CompileResult.java
+++ b/src/main/java/jace/ide/CompileResult.java
@@ -13,7 +13,9 @@ public interface CompileResult<T> {
     
     public T getCompiledAsset();
     
-    public Map<Integer, String> getErrorsAndWarnings();
+    public Map<Integer, String> getErrors();
+
+    public Map<Integer, String> getWarnings();
 
     public List<String> getOtherMessages();
 
diff --git a/src/main/java/jace/ide/IdeController.java b/src/main/java/jace/ide/IdeController.java
index 86e01d3..47b3fa4 100644
--- a/src/main/java/jace/ide/IdeController.java
+++ b/src/main/java/jace/ide/IdeController.java
@@ -18,6 +18,7 @@ import javafx.collections.ListChangeListener;
 import javafx.event.ActionEvent;
 import javafx.event.Event;
 import javafx.fxml.FXML;
+import javafx.scene.control.Label;
 import javafx.scene.control.Menu;
 import javafx.scene.control.MenuItem;
 import javafx.scene.control.Tab;
@@ -200,12 +201,18 @@ public class IdeController {
 
     @FXML
     void executeClicked(ActionEvent event) {
-        getCurrentProgram().ifPresent(proxy -> proxy.execute());
+        getCurrentProgram().ifPresent(program -> {
+            program.execute();
+            updateStatusMessages(program.lastResult);
+        });
     }
 
     @FXML
     void testCompileClicked(ActionEvent event) {
-        getCurrentProgram().ifPresent(proxy -> proxy.test());
+        getCurrentProgram().ifPresent(program -> {
+            program.test();
+            updateStatusMessages(program.lastResult);
+        });
     }
 
     @FXML
@@ -242,4 +249,12 @@ public class IdeController {
             runMenu.setDisable(hasNoItems);
         });
     }
+
+    private void updateStatusMessages(CompileResult lastResult) {
+        String message = "Compiler was " + (lastResult.isSuccessful() ? " successful" : " NOT SUCCESSFUL");
+        message += " -- ";
+        message += lastResult.getErrors().size() + " error(s) and "+lastResult.getWarnings().size()+" warning(s) reported.";
+        statusBar.getItems().clear();
+        statusBar.getItems().add(new Label(message));
+    }
 }
diff --git a/src/main/java/jace/ide/Program.java b/src/main/java/jace/ide/Program.java
index 2fa24f0..405e7ae 100644
--- a/src/main/java/jace/ide/Program.java
+++ b/src/main/java/jace/ide/Program.java
@@ -29,36 +29,6 @@ public class Program {
 
     public static String CODEMIRROR_EDITOR = "/codemirror/editor.html";
 
-    public void save(File newTarget) {
-        FileWriter writer = null;
-        if (newTarget == null && targetFile == null) {
-            return;
-        }
-        if (newTarget != null) {
-            targetFile = newTarget;
-        }
-        filename = targetFile.getName();
-        try {
-            writer = new FileWriter(targetFile, false);
-            writer.append(getValue());
-            writer.close();
-        } catch (IOException ex) {
-            Logger.getLogger(Program.class.getName()).log(Level.SEVERE, null, ex);
-        } finally {
-            try {
-                if (writer != null) {
-                    writer.close();
-                }
-            } catch (IOException ex) {
-                Logger.getLogger(Program.class.getName()).log(Level.SEVERE, null, ex);
-            }
-        }
-    }
-
-    public boolean isChanged() {
-        return (Boolean) codeMirror.call("isClean");
-    }
-
     public static enum DocumentType {
 
         applesoft(new ApplesoftHandler(), "textfile", "*.bas"), assembly(new AssemblyHandler(), "textfile", "*.a", "*.s", "*.asm"), plain(new TextHandler(), "textfile", "*.txt"), hex(new TextHandler(), "textfile", "*.bin", "*.raw");
@@ -165,7 +135,8 @@ public class Program {
     public void createEditor() {
         String document = targetFile == null ? getHandler().getNewDocumentContent() : getFileContents(targetFile);
         String optionString = buildOptions();
-        codeMirror = (JSObject) editor.getEngine().executeScript("CodeMirror(document.body, " + optionString + ");");
+        editor.getEngine().executeScript("var codeMirror = CodeMirror(document.body, " + optionString + ");");
+        codeMirror = (JSObject) editor.getEngine().executeScript("codeMirror");
         setValue(document);
     }
 
@@ -195,6 +166,37 @@ public class Program {
         return "";
     }
 
+
+    public void save(File newTarget) {
+        FileWriter writer = null;
+        if (newTarget == null && targetFile == null) {
+            return;
+        }
+        if (newTarget != null) {
+            targetFile = newTarget;
+        }
+        filename = targetFile.getName();
+        try {
+            writer = new FileWriter(targetFile, false);
+            writer.append(getValue());
+            writer.close();
+        } catch (IOException ex) {
+            Logger.getLogger(Program.class.getName()).log(Level.SEVERE, null, ex);
+        } finally {
+            try {
+                if (writer != null) {
+                    writer.close();
+                }
+            } catch (IOException ex) {
+                Logger.getLogger(Program.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        }
+    }
+
+    public boolean isChanged() {
+        return (Boolean) codeMirror.call("isClean");
+    }
+
     private String buildOptions() {
         StringBuilder builder = new StringBuilder();
         builder.append("{");
@@ -215,6 +217,7 @@ public class Program {
 
     public void execute() {
         lastResult = getHandler().compile(this);
+        manageCompileResult(lastResult);
         if (lastResult.isSuccessful()) {
             getHandler().execute(lastResult);
         }
@@ -222,8 +225,23 @@ public class Program {
 
     public void test() {
         lastResult = getHandler().compile(this);
+        manageCompileResult(lastResult);
     }
 
+    private void manageCompileResult(CompileResult lastResult) {
+        editor.getEngine().executeScript("clearHighlights()");
+        lastResult.getWarnings().forEach((line,message) -> 
+            editor.getEngine().executeScript("highlightLine("+line+",false,\""+escapeString(message)+"\");")
+        );
+        lastResult.getErrors().forEach((line,message) -> 
+            editor.getEngine().executeScript("highlightLine("+line+",true,\""+escapeString(message)+"\");")
+        );
+    }    
+
+    private String escapeString(Object message) {
+        return String.valueOf(message).replaceAll("\\\"", "&quot;");
+    }
+    
     public void log(String message) {
         System.out.println(message);
     }
diff --git a/src/main/java/jace/ide/TextHandler.java b/src/main/java/jace/ide/TextHandler.java
index 674ecd4..535ab41 100644
--- a/src/main/java/jace/ide/TextHandler.java
+++ b/src/main/java/jace/ide/TextHandler.java
@@ -32,7 +32,12 @@ class TextHandler implements LanguageHandler<String> {
             }
 
             @Override
-            public Map<Integer, String> getErrorsAndWarnings() {
+            public Map<Integer, String> getErrors() {
+                return Collections.EMPTY_MAP;
+            }
+            
+            @Override
+            public Map<Integer, String> getWarnings() {
                 return Collections.EMPTY_MAP;
             }
 
diff --git a/src/main/resources/codemirror/editor.html b/src/main/resources/codemirror/editor.html
index bbd763c..dd058c6 100644
--- a/src/main/resources/codemirror/editor.html
+++ b/src/main/resources/codemirror/editor.html
@@ -1,6 +1,7 @@
 <html>
     <head>
         <title>Jace IDE</title>
+        <!--<script src="lib/jquery-2.1.4.min.js"></script>-->
         <script src="lib/codemirror.js"></script>
         <link rel="stylesheet" href="lib/codemirror.css"/>
     </head>
@@ -14,6 +15,38 @@
                 overflow-x: hidden;
                 overflow-y: hidden;
             }
+            .line-error {
+                background: #FBC2C4 !important;
+                color: #8a1f11 !important;
+            }
+            .line-warning {
+                background: #F8FFAB !important;
+                color: #000080 !important;
+            }
         </style>
+        <script>
+            var messages = [];
+            function clearHighlights() {
+                codeMirror.eachLine(function (line) {
+                    codeMirror.removeLineClass(line, "background", "line-error");
+                    codeMirror.removeLineClass(line, "background", "line-warning");
+                });
+                for (var i = 0; i < messages.length; ++i) {
+                    codeMirror.removeLineWidget(messages[i]);
+                }
+                messages = [];
+            }
+            function highlightLine(lineNumber, isError, message) {
+                if (isError) {
+                    codeMirror.removeLineClass(lineNumber-1, "background", "line-warning");
+                }
+                codeMirror.addLineClass(lineNumber - 1, 'background', isError ? 'line-error' : 'line-warning');
+                var msg = document.createElement("div");
+                var text = document.createTextNode(message);
+                msg.appendChild(text);
+                var widget = codeMirror.addLineWidget(lineNumber - 1, msg, {coverGutter: false, noHScroll: true});
+                messages.push(widget);
+            }
+        </script>
     </body>
 </html>
\ No newline at end of file