This update for Virtual Automation 6.1 provides a backward compatibility for the issue, described in KB article 122703.
This update contains fixes for the following issues
PVA-34355: Impossible to manage containers after VA MN update if VA Agent is not updated.
Obtaining the Update
You can download and install VA Agent and Master updates using the installer included in the Virtual Automation distribution. For more information on Virtual Automation 6.1 builds, releases, and supported virtualization products, please see KB article 112297.