I just had the same issue. Can you confirm your Microsoft.NET is running correctly?
I accidentally removed the Microsoft.NET 3.51 (Win7 x64 - Turn Windows features on or off ) and the error occured. Then I tried to reinstall Intel SSD Toolbox and I got the message Microsoft.NET 3.0 was missing. So I re-enabled it and no more errors for me. The optimzer works without problems now.