3 files changed, 8 insertions, 5 deletions
diff --git a/demo/src/index.html b/demo/src/index.html
index 9b69306..332ccb3 100644
--- a/demo/src/index.html
+++ b/demo/src/index.html
@@ -17,7 +17,7 @@
       <div class="toolbar">
         <button id="run-button">Run</button>
         <button id="stop-button" disabled>Stop</button>
-        <button id="revert-button">Back to leds example</button>
+        <button id="revert-button">Back to LEDS example</button>
         <div class="spacer"></div>
         <div id="status-label"></div>
       </div>
diff --git a/demo/src/index.ts b/demo/src/index.ts
index 4246547..e3f9a67 100644
--- a/demo/src/index.ts
+++ b/demo/src/index.ts
@@ -102,9 +102,9 @@ async function compileAndRun() {
     }
   } catch (err) {
     runButton.removeAttribute('disabled');
+    revertButton.removeAttribute('disabled');
     alert('Failed: ' + err);
   } finally {
-    revertButton.removeAttribute('disabled');
     statusLabel.textContent = '';
   }
 }
diff --git a/demo/src/utils/editor-history.util.ts b/demo/src/utils/editor-history.util.ts
index 33d1916..65ca38a 100644
--- a/demo/src/utils/editor-history.util.ts
+++ b/demo/src/utils/editor-history.util.ts
@@ -1,17 +1,20 @@
 const AVRJS8_EDITOR_HISTORY = 'AVRJS8_EDITOR_HISTORY';
 
 export class EditorHistoryUtil {
+  static hasLocalStorage: boolean = !!window.localStorage;
+
   static storeSnippet(codeSnippet: string) {
-    if (window.localStorage) {
-      window.localStorage.setItem(AVRJS8_EDITOR_HISTORY, codeSnippet);
-    } else throw new Error('no localStorage support');
+    if (!EditorHistoryUtil.hasLocalStorage) return;
+    window.localStorage.setItem(AVRJS8_EDITOR_HISTORY, codeSnippet);
   }
 
   static clearSnippet() {
+    if (!EditorHistoryUtil.hasLocalStorage) return;
     localStorage.removeItem(AVRJS8_EDITOR_HISTORY);
   }
 
   static getValue() {
+    if (!EditorHistoryUtil.hasLocalStorage) return;
     return localStorage.getItem(AVRJS8_EDITOR_HISTORY);
   }
 }