I see there are many of these posted here for older versions of netbackup. I am on NBU 7.6.04 and it might be too early to say this is a bug.....but I am posting it here to see if there is a solution.
from BPTM:
00:07:41.736 [16008.10384] <16> 1915168:bptm:16008:XXXXXX: [ERROR] PDSTS: fbu_scan_buf: fbu_align_extents() failed (2060022:software error)
00:07:41.736 [16008.10384] <16> 1915168:bptm:16008:XXXXXX: [ERROR] PDSTS: fbu_scan_buf: err=(2060022:software error) can't process FBU format, ignore
From job status:
05152015 011657 - Critical bptm (pid=15872) image write failed error 2060022 software error
05152015 011709 - Error bpbrm (pid=16136) from client XXXXXX ERR - tar file write error (14)
05152015 011731 - Info bpbkar32 (pid=0) done. status 84 media write error
NBU 7.6.04
Master/Media/Client OS Win 2008 R2
This is a VM backup to an MSDP.
