Yes, I have. I've been following the instructions below and still getting an error message.
First, log in to the Customer Area and download the latest version of the XenForo Resource Manager.
It is important that the files on the server and what you're uploading are "merged". Otherwise you may break your XenForo installation.
Use your FTP client to connect to your server and navigate to the directory where you installed XenForo. Unzip the file you downloaded in step 1 and upload the contents of the upload directory into the directory where you installed XenForo.
Log in to your XenForo admin control panel, and select Install Add-on from the left. In Install from file on server, enter library/XenResource/addon-XenResource.xml and submit the form.