I'm confused, you stated an issue and now stated it works fine and there's no error. What's happening exactly? I do not recommend using site side caching unless it's directly and properly coded into the extension. Caching basically takes a snapshot of the page, slaps a datetime on it, then checks it after the expiration time to replace it with a new snapshot.

In an environment with dynamic content (such as CB or any constant-changing site) this is a horrible idea as you'll -always- have out of date data. Site side caching is best used for Blog sites or sites that are primarily static. If you absolutely need the performance gain (minimal) you should contact your host for server side caching and compression.