I've used the SeleniumIDE extensively on Linux (Ubuntu) a while ago, now I'm trying to get it working on a Mac (OSX v10.9) in the Firefox browser. I have it installed but it doesn't seem to be interacting with the browser. When I try and record scripts, nothing happens. If I manually add a test case for open('http://www.google.com') I get

[info] Executing: |open('http://www.google.com') | | |
[error] Unknown command: 'open('http://www.google.com')' 

See this screenshot for more background:

enter image description here

  • 1
    Are you using some combination of the supported browsers / OS / IDE listed here? docs.seleniumhq.org/about/platforms.jsp Adding a little more detail that documents your precise setup might go a long way to getting a quality answer instead of guesswork.
    – bmike
    Dec 3, 2013 at 18:13
  • Added more info, the browser, the OS version and a screenshot showing the issue Dec 3, 2013 at 18:17

1 Answer 1


The answer was that you put the Base URL up top, e.g. http://www.google.com and then you put the rest of the url, e.g. /images in the 'Target' field.

If you only want to go to the base page of the site (e.g. "http://www.google.com") you just use that for the BaseURL and then use in the 'Command' line use 'open' with no parameters) but keep the Target field blank.

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