Summary
Archive job (aka Double Protection) started to fail after a scheduling change.
Symptoms
If you change the Archive job schedule from the Image backup mode screen, the Archive job would fail with errors like:
172.16.1.46 6/8/2010 1:00:37am SNBJH_3053E *** File browser on node BEXADVANCED returned error -1
***
172.16.1.46 6/8/2010 1:00:37am SNBJHB3460J --- Putting definition on retry queue: node BEXADVANCED
disk SVP$APPS:|F: of job 1275973200. ---
172.16.1.46 6/8/2010 1:00:37am SNBJH_3206E *** Fail connecting node<BEXADVANCED>
disk<SVP$APPS:|F:> for job<dp1272312659>, task skipped ***
Resolution
Edit the job from the Backup / Block screen and change the DP job schedule again and save it.