Hi AtliDev,
Thank you for your update.
As mentioned in our documentation, .NET Framework 2.0, 3.5, 4.5.1 and MVC3 assemblies and provide the separate Framework Add-On setup. This setup can be downloaded by customer with valid license and so it won’t available for customer with trail license.
Once installing Framework Add-On setup, you can find the Framework 2.0, 3.5 and 4.5.1 assemblies from the Syncfusion Essential Studio Platform installed location.
Location: {ProgramFilesFolder}\Syncfusion\Essential Studio\ {Platform}\ {version}\precompiledassemblies
Example: C:\Program Files (x86)\Syncfusion\Essential Studio\Windows\16.4.0.40\precompiledassemblies
Regards,
Dilli babu.