.NET Framework
The LT-55 XL software requires Microsoft’s .NET Framework version 3.5 to be installed on your Windows PC in order for it to be installed and run. Most computers that have been built in the past 2-3 years will have this already installed but some older ones might have a previous version installed or none at all. If you need to install the .NET Framework, please click the link below to download it and then install it.