I tried to save my Custom EQ settings under Windows 10 Ver 1607 and got this error
MusicBee v3.0.5864.37328 (Win10.0), 4 Feb 2017 10:51:
System.UnauthorizedAccessException: Access to the path 'C:\Program Files (x86)\MusicBee\Equaliser\****.sde' is denied.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
at #=qVcsmjclwgJ6ka94VszbS66Fimp32eaAyE94wDtk4T3GgpPDUYATjcuaV6DdpkdZr.#=qVUyVZDgmxwcmIrB74uaUgw==(#=qofcm8sIYWLYgYsRYAz0tHvrPZec$yWYe6sOuIQZHewC1G9XZqzeyf0HXwuA7RwSn #=qhMwdgl0b4mNb6GoZ3OnlAQ==, #=quG1VrD$vJ6ZTplNx5c56Iw== #=q6TX4Si7v_oCV52lFvIQeJw==)
at #=qCsTMHrtTL9fCUQSvQtUWloRe16fi9FS0nafABozHVtXzvxYJH1Pzs20qO_oi8IFP.#=qxUHpINsNegkwX5GbAtPGm4OnaYSPr7Cnuf5aTAH9rrk=(Object #=qooP058SsWpY$ZtSSC1yoCg==, EventArgs #=qUDcLBWMtV4c0Zg5BGORWWw==)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at #=qYokz$4528jpYtcwzt5ym7LIRibwCYEIGjAy19NLLV3E=.OnClick(EventArgs #=qhm9ef7WK67bRLBgIE9NqXg==)
at #=qYokz$4528jpYtcwzt5ym7LIRibwCYEIGjAy19NLLV3E=.#=q4_lYR9wjcgdkdHkdkn378eVDFbTDyu6r_bY6Qx3DARc=(Object #=qXS7y8x7AL980W97V$DI9yQ==, EventArgs #=qeWyHP$GYpO0$iSapDhJuKQ==)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)