I tried everything, no matter what i always get this error installing a mod from the workshop
i really don't know what to do, can somebody help ?

_7thWrapperLib.IrosArcException: Signature mismatch
in _7thWrapperLib.IrosArc.ArcHeader.Open(Stream s) in C:\Users\TurBoss\Projetcs\7h\7thWrapperLib\IrosArc.cs:riga 89
in _7thWrapperLib.IrosArc..ctor(String filename, Boolean patchable) in C:\Users\TurBoss\Projetcs\7h\7thWrapperLib\IrosArc.cs:riga 307
in Iros._7th.Workshop.fImportMod.ImportMod(String source, String name, Boolean iroMode, Boolean noCopy) in C:\Users\TurBoss\Projetcs\7h\7thWorkshop\fImportMod.cs:riga 85
in Iros._7th.Workshop.fImportMod.bOK_Click(Object sender, EventArgs e) in C:\Users\TurBoss\Projetcs\7h\7thWorkshop\fImportMod.cs:riga 125
in System.Windows.Forms.Control.OnClick(EventArgs e)
in System.Windows.Forms.Button.OnClick(EventArgs e)
in System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
in System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
in System.Windows.Forms.Control.WndProc(Message& m)
in System.Windows.Forms.ButtonBase.WndProc(Message& m)
in System.Windows.Forms.Button.WndProc(Message& m)
in System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
in System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
in System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)