A private key for specified extension already exists. Reuse that key or delete it first

Question

Im trying to add a new extension for google chrome.(im new to this).

I keep getting the error message "A Private key for specified extension already exists. Reuse that key or delete it first".

{
   "manifest_version": 2,
   "description": "test",

   "name": "test",
   "version": "2.1",

   "content_scripts": [
 {
      "matches": ["*://www.google.com*"],
    "js": ["script.js"]

   }



  ]
}

Answer 1

I was dealing with that issue too. I changed the root folder name (that contained my manifest and js files) from "extension" to something else like "chromeext" and I was able to pack the extension successfully.

Answer 2

Bumping this thread with a (possible) fix for others : the extension folder name must not contain spaces. E.g. change My Extension Folder to MyExtensionFolder.

Answer 3

In the root folder where your extension is located, there is a .pem file. Simply delete it.