Fatal error while unpacking


So I recompiled NBox for .Net 4 just to get it to do anything. Now I'm getting the following error:

System.IO.FileNotFoundException: Could not load file or assembly 'PresentationFramework, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
File name: 'PresentationFramework, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
at System.Reflection.Assembly._nGetEntryPoint()
at System.Reflection.Assembly.get_EntryPoint()
at NBox.Loader.Loader.Main(String[] args)

WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].