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Full Version: Error while adding links to single posts
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I'm using this pretty old view single post plugin:

When I add more then 3 links to one individual thread, it keeps giving me this error:

You don't have permission to access /editpost.php on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

And now it's not even letting me disable the plugin

And when I delete the plugin the error is still there.
contact your web host and ask to disable any additional security (eg. mod_security) they are using for your site.
you may also try the .htaccess method