The plugin generated 3 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.
I was developing wordpress plugin and faced problem of Header Already sent which is weird because everything is OK with other other pages but only in home page.
Sometimes, programmers mind hit in right place. I went through encoding impact in uploading. Yeah, I was correct. It was because of server encoding method and gap between encoding.
- FileZilla for File Transfer
- Notepad default edit and upload
I used notepad++ for editing.
I went to encoding menu of notepad++ then change file to Encode with UTF-8 without BOM.
Now, Its working.
Never Know, when and how you will get stuck with server issue.
***Best of Luck***