I can not load tapes in the backup unit. This is a PowerVault 136T unit. I'm using Symantec Backup Exec 10 d, Version 10.1 Rev. 5629 on a WK3 Server. If you try to import the tape using the software, the software never sees the tapes and is constantly beeping requesting the tape be inserted into the portal. Actually there are 6 new tapes waiting to be imported. If you try do it manuallty following the screen GUI then you recieve this error message: "The souce slot is empty. select a different slot.", this happens no matter which empty slot is selected. I'm using tapes Imation Ultrium 200/400 GB LT2, the bar code option has been disabled. If you issue the unlock command the door does open but only let you take the tapes in that magazine. How do I do to reach all the other mags, without opening the door for which I have no key? The other error mesage is that there is problem with tape on Col. 1 Mag C slot 4. Please advise urgently. Thanks.