diff --git a/src/vector/app.js b/src/vector/app.js
index cb3ce2a2..65fac653 100644
--- a/src/vector/app.js
+++ b/src/vector/app.js
@@ -191,8 +191,17 @@ async function autoRegister() {
     });
     const password = "this should be really really secure";
 
+    function sleep(ms) {
+        return new Promise(resolve => setTimeout(resolve, ms));
+    }
+
     // make sure the server is up (active service worker)
     await navigator.serviceWorker.ready;
+    // on Firefix, the ready promise resolves just prior to activation
+    // on Chrome, the ready promise resolves just after activation.
+    // We need to make requests AFTER we have been activated, else the /register request
+    // will fail.
+    await sleep(10);
 
     let response = null;
     try {
diff --git a/src/vector/dendrite.wasm b/src/vector/dendrite.wasm
index a1e9b589..38b3618e 100755
Binary files a/src/vector/dendrite.wasm and b/src/vector/dendrite.wasm differ
diff --git a/webpack.config.js b/webpack.config.js
index 5dbaf20b..999a7ede 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -32,7 +32,7 @@ module.exports = (env, argv) => {
 
         entry: {
             "bundle": "./src/vector/index.js",
-            // "indexeddb_worker": "./src/vector/indexeddb-worker.js",
+            "indexeddb_worker": "./src/vector/indexeddb-worker.js",
             "dendrite_sw": "./src/vector/dendrite-sw.js",
             "mobileguide": "./src/vector/mobile_guide/index.js",
             "sqlitejs": "./src/vector/sqlitejs.js",