the newversioncheck still pointed to the old project site (hosted by Cognizo, folks behind catsone.com) who abandoned the open-source project in favour of selling a commercial version. Therefore it no longer works. We disabled it when we realised that the 'version check' sends company names and user email addresses to them as part of the check. Nice.
At some point, we will replace it with a simple version check that looks at the projects github release page.