[Plugin: Plugin updates blocker] Fails on 3.3.2

I used to like this plugin but now when I upgraded WP i get upon saving settings:

Warning: unserialize() expects parameter 1 to be string, array given in /home/abc/public_html/wp-content/plugins/plugin-update-blocker/plugin-update-blocker.php on line 75

Warning: Invalid argument supplied for foreach() in /home/abc/public_html/wp-content/plugins/plugin-update-blocker/plugin-update-blocker.php on line 80

And it does not work anymore…

http://ww.wp.xz.cn/extend/plugins/plugin-update-blocker/