Add error checking to wordpress plugin api

git-svn-id: https://plugins.svn.wordpress.org/contentclick/trunk@948919 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add error checking to wordpress plugin api

git-svn-id: https://plugins.svn.wordpress.org/contentclick/trunk@948925 b8457f37-d9ea-0310-8a92-e5e31aec5664