If the license file (.plf) is lost, it is necessary to recover it for reinstall.
TAC Vista versions from version 3.30 to 4.50
The license file is necessary for the system to run. In case of crashed PC or similar, the license file needs to be reinstalled together with its matching dongle.
As long as the dongle ID or Order no. can be presented, it may be possible to regenerate the .plf license file.
Please contact the Product Support Services for further assistance.
Official support of Vista IV licensing has been suspended as of 1/1/2012.