If you use the Dreamweaver Extension for BrowserLab (and I recommend it) you should update it.
Information and the download files are available at http://labs.adobe.com/downloads/browserlab.html
Note: Read the instructions carefully:
- Installation requires installing two extensions.
- If updating it is necessary to manually remove the old BrowserLab extensions.
- If you’re installing for the first time, make sure to install the Extension Manager CS4 2.1 patch before installing the extensions.
