I have a fresh Craft install set up locally at mysite.craft.dev. I would like to start building out the features offered by the pro license, but when I click the "Show me" link in the footer, I get "An unknown error occurred."

I am seeing this error in craft.log: 015/04/03 17:13:55 [error] [php] Cannot modify header information - headers already sent (/Users/aaron/Sites/mysite/craft/app/framework/web/CHttpRequest.php:1392)

In potentially related news, tasks do not seem to be behaving correctly.

Anyone ever experience this before? Any help is appreciated :)

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  • There similar question already. Unfortunately it's still more or less unsolved.
    – carlcs
    Commented Apr 3, 2015 at 17:22

1 Answer 1


I found a solution! I had my local environment setup with homebrew following this article's instructions. After looking at the php error logs, I uncommented always_populate_raw_post_data = -1 in the php.ini file found in /usr/local/etc/php/5.6.

I then restarted the brew services with brew services restart php56 (install brew services by tapping gapple/services with brew tap gapple/services) and restarted apache with apachectl restart.

That did the trick!

  • I had to go back to php55 to solve my issues, thanks for the info! Commented Apr 4, 2015 at 13:16

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