I had Xenatendo installed sometimes ago, then I removed it without removing the addon folders. Recently, I tried to remove the folders as well and I got the following issue: After removing the folders, I deleted a post. straight after deleting the post I got server error 500. The problem did not go away until I put the EWRatendo folder back to the library folder. I tried to reproduce the errors a few times and got the same errors. I am not sure what is causing this. Thanks.