"Custom Post Template" Error

Hi
I hope the second will be my last question. Why plugin written below gives error.

Plugin Name: Custom Post Template
Current Plugin Version: 1.5
Last Updated: 14 June 2012
Details: It was last updated 7 years 10 months ago and tested up to WordPress 3.4.2. Plugins can be removed from wordpress.org for various reasons. This can include benign issues like a plugin author discontinuing development or moving the plugin distribution to their own site, but some might also be due to security issues. In any case, future updates may or may not be available, so it is worth investigating the cause and deciding whether to temporarily or permanently replace or remove the plugin. Get more information.
Plugin URL: http://wordpress.org/extend/plugins/custom-post-template/
Repository URL: https://wordpress.org/plugins/custom-post-template