NetIQ Vivinet Assessor failing to start (NETIQKB73075)

When attempting to launch Vivinet Assessor it will not open, stating that another assessment is already open.

To Resolve this, open the registry on the machine hosting Vivinet Assessor, and browse to the following key:

HKLM | Software | NetIQ Network Performance | VoIP Assessor | Current Assessment

Delete the value portion of the registry entry, leaving it blank.

Start Vivinet Assessor again, the issue should now be resolved.

A registry value was not properly cleared on last close of Vivinet Assessor

Formerly known as NETIQKB73075