Post Voting Plugin causing webmaster errors

Hello, several weeks ago I installed your post voting plugin. As it really wasn't what I was looking for I uninstalled it as it looked to tacky and since then have been struck by Google webmaster tools errors. As I have not been able to fix it my sites SERP has suffered a significant impact and I am still thrown the same error code every day. Please help or will be seeking a refund as this plugin has destroyed my Google rankings :slight_frown: