Anand

What about downgrading to 3.5.2? It is also not possible. The plugin install either 3.5.3 Alpha or 3.7 Alpha.

No way to go back to wither 3.5.2 Stable or 3.6 RC2 with the plugin?

Oh I fixed the error! 🙂

Simply open your wp-config.php file in any text editor and delete the following line or put // before the line:

define('WP_POST_REVISIONS', true );