The .NET Framework Version options control settings used by .NET actions.
Default .NET Framework Version
Specifies the default for new .NET actions added to your build. Most .NET actions let you then override that default.
Allow reloading of .NET custom action assemblies
Checking this option allows FinalBuilder to reload assemblies required by custom action implemented in .NET. Reloading will take place automatically when an action package is saved in ActionStudio, or from the Package Manager dialog.
Unload custom action assemblies whenever the project is idle
Checking this option means that FinalBuilder will unload custom action assemblies when FinalBuilder is idle. For example, after a build have completed or when the action properties dialog is closed.