I have a BCM 400 that I can't login to either element manager or call pilot manager. I can login to telset programming fine. Voicemail works, and all lights on the chassis are solid green. When trying to connect to element manager I get an error, can't download cartridge. I've never seen this. Usually of the hard drive fails, voicemail goes down and I chassis lights stay blinking. Before replacing the drive, I want to see if anyone else has suggestions. Thanks