TSM server 5.3.4 on windows 2K server.

Overland Neo 4100 LTO2 library with 2 x LTO2 drives conected via SCSI 320.

We recently replaced both LTO2 drives in the library, as well as the SCSI
HBA. The drives and library are fine in windows when running the HP
StorageWorks libray and tape tools.

Instead of updating the paths in TSM, I just deleted them. The devices
were NOT deleted, just the paths:

tsm: ITG-TSM>q drive

Library Name     Drive Name       Device Type     On-Line
------------     ------------     -----------     -------------------
LB6.0.0.5        MT1.0.0.4        LTO             Yes
LB6.0.0.5        MT2.0.0.4        LTO             Yes

So first I create the new path for the library and that works:

tsm: ITG-TSM>define path itg-tsm lb6.0.0.5 srctype=server desttype=library
             device=lb6.0.0.4 online=yes
ANR1720I A path from ITG-TSM to LB6.0.0.5 has been defined.
tsm: ITG-TSM>q path
Source Name     Source Type     Destination     Destination     On-Line
                                Name            Type
-----------     -----------     -----------     -----------     -------
ITG-TSM         SERVER          LB6.0.0.5       LIBRARY         Yes


But when I try to add the drives paths, I get an error:

tsm: ITG-TSM>define path itg-tsm mt1.0.0.4 srctype=server desttype=drive
             library=lb6.0.0.5 device=mt1.0.0.4 online=yes
ANR8466E DEFINE PATH: Invalid update request for drive MT1.0.0.4 in
library
LB6.0.0.5.
ANS8001I Return code 15.


Any ideas? I'm kinda at a loss of what to try next, especially because I
had done this update path a while ago and it worked just fine.

Thanks,

Alex