Rizqy Hidayat on "[Plugin: W3 Total Cache] NewRelicService.php automatically always missing"

Hi,

I'm using W3TC on my client's site. I got this problem twice now. First sight is when we're login to dashboard, we're always got 500: Internal Server Error. I checked the error_log at /wp-admin and got this surprisingly:

[11-Aug-2013 03:37:32 UTC] PHP Warning:  require_once(/home/uniccom/public_html/wp-content/plugins/w3-total-cache/lib/W3/NewRelicService.php) [<a href='function.require-once'>function.require-once</a>]: failed to open stream: No such file or directory in /home/uniccom/public_html/wp-content/plugins/w3-total-cache/inc/define.php on line 1435
[11-Aug-2013 03:37:32 UTC] PHP Fatal error:  require_once() [<a href='function.require'>function.require</a>]: Failed opening required '/home/***/public_html/wp-content/plugins/w3-total-cache/lib/W3/NewRelicService.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/***/public_html/wp-content/plugins/w3-total-cache/inc/define.php on line 1435

I assume that the file is missing, and yes it is. I've try these:
1. Upload NewRelicService.php via FTP, successfully transferred, then its gone
2. Upload the same file via cPanel File Manager, successfully uploaded, then its gone
3. Create a file via File Manager, copy-paste the file content, successfully save, then its gone

Its the same condition when I got this problem last August 4. The only way I resolve it is by deactivating and uninstalling the plugin via file manager. And the dashboard is up again.

FYI, I never edit or change the plugins file.

Anyone has the same problem? Any suggestion?

http://wordpress.org/plugins/w3-total-cache/