The WinterTree spell checker library (SSCE5332.dll) is not linked directly to the GN4 applications , but it wrapped by a  Tera library GN3Sentry.dll.

Both the SSCE5332.dll and GN3Sentry.dll files must be into the GN4 applications current directory. There is no need to register the library GN3Sentry.dll.

Wrapping the spell checking libraries allows you to use a different spelling engine for each language you need to check, e.g. Polderland.

See also Library.