Stop chain not allowed in callback on Windows 7 or Windows X64

A Windows callback attempted to perform a STOP chain on Windows 7 or higher or on 64‑bit Windows platforms. Because these systems prevent exceptions from being thrown across the kernel (user32.dll) boundary, a Windows callback (for example, a .NET assembly API delegate called from a WinForm or an ActiveX event called from a UI control) cannot perform a STOP chain without causing problems. Therefore, this action is not allowed.