Kindly delete the folders below and then activate the license.


MAC

HD\Library\Application Support\Avid\Licenses

HD\Library\Application Support\Avid\SWL

HD\Library\Application Support\Avid\Pixie (skip, if not available )


Win 7  

C:\ProgramData\Avid\Licenses

C:\ProgramData\Avid\SWL

C:\ProgramData\Avid\Pixie or C:\ProgramData\Pinnacle\Pixie (skip, if not available)