failed to install SimpleTester for unit test

[eluser]Unknown[/eluser]
CI 1.7.2, SimpleTest 1.0.1, SimpleTester 1.0

After I modified the config autoload:

Code:

$autoload['libraries'] = array('simpletester');

Got the error while running:

Code:

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  More information on this error
Below is the original error message

Error 324 (net::ERR_EMPTY_RESPONSE): Unknown error.

Thanks for help!