After installing and activating the plugin on my local copy, and viewing a /amp/ version of a blog post, I get a blank page outputting this error:
Notice: AMP_Post_Template::verify_and_include was called <strong>incorrectly</strong>. Path validation for template (C:wampwwwbellavouwp-contentpluginsamp/templates/single.php) failed. Path cannot traverse and must be located inWP_CONTENT_DIR. Please see <a href="https://codex.wordpress.org/Debugging_in_WordPress">Debugging in WordPress</a> for more information. (This message was added in version 0.1.) in C:wampwwwbellavouwp-includesfunctions.php on line 3792