Files in Use.
Some Files that need to be updated are currently in use.
The following applications are using files that need to be updated by this setup. Close these applications and click Retry to continue
"install the Update"

The cause of this issue is under investigation
Workaround:
The Files in Use window provides three options to continue with the installation process:
Retry, Ignore and Exit
To continue with the upgrade, select the Ignore button.
The warning may reappear later in the upgrade, but clicking Ignore again will allow the process to run to completion.
Note:
The Retry button will not progress the installation and will alert again after a few seconds.
The Exit button will cancel the upgrade process, leaving DLO working in the previous version.
This issue is currently under investigation by Veritas Technologies LLC. Pending the outcome of the investigation, this issue may be resolved by way of a patch or hotfix in current or future revisions of the software. However, this particular issue is not currently scheduled for any release. If you feel this issue has a direct business impact for you and your continued use of the product, please contact your Veritas Sales representative or the Veritas Sales group to discuss these concerns.
Note: Customers experiencing this issue are encouraged to contact Veritas Technical Support as data is still being collected to assist in resolving this issue.