Error "Unable parse file browser.yml" when running a test with Magento automation test framework -

I have tried to run a test with the Magenta Automation Framework, but the results showed as "no testcases are not executed" And the output is shown as an error

  Fatal error: Unsolicited exception 'Unable to parse the file with the' InvalidAgreement Exception 'message' C: \ users \ huongnguyen \ mtaf \ Config \ browsers.yml ": Unable to parse row 27 (---). In 'E': \ SymfonyComponents \ xAMP P \ php \ pear YAML \ sfYaml.php: 100 stack trace: # 0 C: \ Users \ huongnguyen \ mtaf \ lib \ Dana \ selenium \ helper \ file.php (52): sfYaml:: Load ('C : \ Users \ huongn ... ') # 1 C: \ Users \ huongnguyen \ mtaf \ lib \ Dana \ Selenium \ TestConfiguration.php (387): Mage_Selenium_Helper_File-> LoadYamlFile (' C: \ Users \ huongn .. .) # 2 C: \ Users \ huongnguyen \ mtaf \ lib \ Dana \ Selenium \ TestConfiguration.php (264): Mage_Selenium_TestConfiguration- & gt; _loadConfigData () # 3 C: \ Users \ huongnguyen \ mtaf \ lib \ Dana \ Selenium \ TestConfiguration.php (163): Mage_Selenium_TestConfiguration-> _initConfig () # 4C: \ Users \ huongnguyen \ mtaf \ lib \ Dana \ Selenium \ TestConfiguration.php (147): Mage_Selenium_TestConfiguration-> Init () # 5: Users: ('C: \ Users \ huongn ...') # 7 in E: \ XAMPP \ php \ Pears \ SymfonyComponents \ YAML \ sfYaml.php on Line 100   
 Anyone ever  
 
 I have updated the Symphony Yumal package to the latest version: Pear Channel - Search Pear.symfony-project.com pear install symfony / YAML   
 Looks like "---" syntax v. 1.0.6 (the latest stable at this time) is supported.