The following error can be caused by a blocked file. It may be nessary to unblock the before extracting:

Import-Module : Could not load file or assembly 'file:///<path to easybox directory>\Edc.EasyBox.Installer.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)
At line:1 char:1
+ Import-Module .\Edc.EasyBox.Installer.dll
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: ([Import-Module], FileLoadException
+ FullyQualifiedErrorId : System.IO.FileLoadException,Microsoft.PowerShell.Commands.ImportModuleCommand

When a file is downloaded from the internet with Internet Explorer, it can be marked as blocked. The Easybox zip file should be unblocked before extraction. The file can be unblocked either through the PropertiesĀ context menu or using the powershell Unblock-FileĀ command.