I'm currently toying around with Sencha Touch 2.2.1 and am trying to get it to run offline using an HTML5 `cache.manifest`. Anyone know how to get this to work? I can only find old guides from the last version which no longer seem to work. After some fiddling I have my manifest as follows:

```
CACHE MANIFEST
index.html
app.js
touch/microloader/development.js

```

But this seems to throw errors in the `development.js` script when it attempts to send fetch the `app.json` file. Are there some Sencha settings I have to adjust for offline mode? Thank you for your help.