I receive the win32k.sys error when trying to connect this client with the server.
On the developer's website, it's mentioned that they've released a new version of NCT-2000-XP that was free of errors and the win32k.sys error was also corrected. However, I've searched on their website, but I couldn't find anything about the download. They indicate a link to a download portal that doesn't contain anything about NCT-2000-XP.
Because of that, I strongly recommend contacting them: https://www.ncomputing.com/en/company/contact-us