@TinyHustlr The XML you are saving might not be the same as the one you are opening.
Be sure you save at this location -> projectFolder/XmlPresetBackups

Someone just had a quasi-similar issue here https://forum.hise.audio/topic/11995/cannot-reopen-project?_=1740129494821

@Christoph-Hart This is super helpful and more than enough to get me started. Much appreciated.

@d-healey Bingo! Using FX Plugin export worked first go 🙏 I just saw VST and was exporting as that and totally missed that it said 'instrument'. Had a feeling it was going to be something basic.

Okay, now I can get back to your scripting 101 video. Thanks again.

There's also the tutorial repo, some of the projects there might not work in the latest builds of HISE without tweaking though - https://github.com/christophhart/hise_tutorial