Theme Test Drive Activation Error

The undefined function error is fixed in Developer 1.1.2:
https://github.com/Automattic/developer/commit/c4e01c31ac288dabd721b04fa47d67beae4c6278

Reveal IDs was also replaced with Simply Show IDs:
https://github.com/Automattic/developer/commit/ec161cdac5fb9ad46ca677086035c759e22582fa

However, there’s still an error when installing Theme Test Drive:

<br />
<b>Warning</b>:  Illegal offset type in isset or empty in <b>wp-includes/class-wp-error.php</b> on line <b>117</b><br />
ERROR: Failed to activate plugin:

This is caused by passing the WP_Error object itself as the error code:
https://plugins.trac.www.ads-software.com/browser/developer/tags/1.1.2/developer.php#L364

Once I replaced that with $activate_result->get_error_message(), I got the proper message:

ERROR: Failed to activate plugin: Plugin file does not exist.

The plugin looks for theme-test-drive/theme-test-drive.php file, which doesn’t exist. The correct file is theme-test-drive/themedrive.php.

I’ve created a pull request: https://github.com/Automattic/developer/pull/38.

Thanks Sergey, we’ll take a look tomorrow.