By default, when you want to use Rapise to record and playback web tests using either Chrome or Firerfox, you simply go to the appropriate web browser "store" and install the extension directly from the store. However sometimes you are testing web applications on a machine with no Internet Connectivity.
Normally you can install the add-ons for Chrome and Firefox directly from the brower's app store (just search for Rapise). This is the easiest option, and avoids the need to run the browsers in developer mode.
If you try and connect to Firefox with Rapise immediately after Firefox has updated, you may see the following error message:
Microsoft JScript runtime error: 'Navigator.GetBrowserHWND()' is null or not an object