Hi Carlos, thanks for the reply.
Still wanted to post here, but I did sort out the issue. I did have an old install of PlasticSCM still lurking around, removed the application via the control panel, removed the 'PlasticSCM` folder from `Program Files`, and also removed the `plasticscm4` folder from my users `AppData` folder, and this resolved the issue completely.
Thanks again for your time!