Older vas libraries had open processes. This can happen from upgrading from 4.0.3 version without rebooting server or restarting all processes with an open library to vas. This can also happen on upgrading from early 4.1 versions due to a product defect.
Please also ensure /var filesystem is not full.
Restart all process such as sshd, sendmail, DB2, or any process that can have an old open library to vas.
The easiest way to ensure no open process is to reboot after upgrading.
Other Useful Commands to help troubleshoot the issue:
/opt/quest/bin/vastool info processes
-Note command is available in version 184.108.40.20618 and up.
/opt/quest/bin/vastool daemon stop vasd
/opt/quest/bin/vastool daemon start vasd