publisher - path too long

The specified path, file name, or both are too long.

The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters. Exception Stack Trace: { --- Begin of exception stack trace --- System.Exception: The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters. at eB.Management.QueueJobHelper.InvokeCustomEngine(QueueEngineProcess qep, String engineDll, String engineNamespace, String proxyConnectInfo, IDictionary`2 jobAttributes) at eB.Management.QueueJobHelper.ProcessQueueEntry(Object sender, PollEventArgs e) --- End of exception stack trace ---

what makes up the file path?

The folder I am trying to publish to is "O:\EBPublisher"