Sparse bundle on NAS - can't open "Resource temporarily unavailable" I just got a new Lacie NAS with their NAS OS 4. After making an initial Time Machine backup to this device I wanted to mount the resulting (encrypted) disk image but when doing so I just received an error message "Resource temporarily unavailable". Googling this error message returned a lot of Voodoo fixes. However, after playing around a bit, restarting a few times etc I realised that I had something called Time Machine service enabled for this share. Turning this service off immediately made the disk image available as expected.
Disable "Time Machine service" for the share the disk image is stored on.