You need to actually explain the error if you want help, it tells you there is nothing in tray 5 because there is nothing in tray 5, it is just information, ignore it because it in no way affects print/copy or fax unless you are trying to print to tray 5.
As for driver install, if the IP opens the webpage of the printer, then the job can make it to the printer too. So it would be something unrelated to tray 5, and if Bi-di is working and the driver shows the tray levels then it will be a protocol issue, so try changing between RAW and LPR on the driver port.
