I was just offering some suggestions. We just don't get involved in fan-written utilities, since we have no knowledge of how they were developed. You might try looking around for Mac development groups to see if you could find some interest in helping you with this.

I also can't be much help with the emulators, either, since I don't use them and don't know the extent of their file access on the Mac. The VST reads and writes to the Plant Tycoon savegame files, as well as its own .vst files, so you would need to manage file access for both the VST and Plant Tycoon if you want to make it work.