I had working selenium with my firefox, but today morning when i ran my test i got the same error. I updated selenium-webdriver for current version ( 2.38 ), but i still have th
I've found the same problem in Mac OS X Mavericks after I updated the Firefox 26.
I solved the problem by updating the selenium-webdriver gem
In your gemfile, replace your current selenium-webdriver gem line with
gem "selenium-webdriver", "~> 2.38.0"
In your console, gem update selenium-webdriver
.
Then bundle install
.
Try the running the test after.