@d-healey Thanks David..... Flushed with success I'm downloading the tutorials now to dig deeper....

Thanks Christoph - didn't expect you to produce this tutorial so quickly :)
I'm a bit tied up for the next couple of days stacking firewood for the coming winter, but as soon as I get a chance I'll go through the tutorial and do some experimenting.....
Thanks again!

I may have found the answer!
Just tried again, starting from scratch as far as saving as a preset, but then this time instead of loading the project (step 2 in the reload as work in progress section) after restarting HISE, I simply opened the .hip file without doing anything else, and there was my project as I had left it, with working sound from mouse and midi keyboard.
It seems that the 'Load Project' option under Files is not necessary and indeed stuffs up the sound from the project - all that is required is to load the .hip preset file.....
It takes a while to get used to the terminology used - I had assumed that loading a project would re-load a previously closed project in the state that it was when closed, but obviously not so. So really the preset is a backup of the project at a certain state and if I want to go back to a selected point in the project development, as long as I have saved a preset at that point (with a suitable name) I just need to load that particular preset.
Now I'll continue with the tutorial, saving a preset at various stages and see what happens when I restore from each.....

OK - many thanks for the response. Appreciate you taking the time to help me out :)
Now I see how it works! Did as you suggested above and managed to create the factory function successfully - now onward and upwards with the remaining controls and the reast of the tutorial....

Also located the editorData.json file, deleted it and yes, 1.0.0 now starts OK

Now I'm wondering how best to pause a project overnight and reload it the next day to continue. I tried File -> Close Project, shutdown HISE, restarted and attempted to load the project(MusicBox), but there was nothing displayed - it was if it was an empty project.
Tried File -> Open File -> Presets folder and selected the latest autosave.hip and there was my tutorial stuff - except the keyboard now only plays the mallet sound, no musical notes. I may have stuffed something up by switching between versions 1.1.0 and 1.0.0 so I'll manually delete the MusicBox project folder and sub folders and start from the beginning again using version 1.0.0

What is the recommended way to save a project to enable a computer shutdown so that I can pick up again the next day?

Sorry for all the questions!

OK, downloaded the images and was able to continue to the next step of adding the first control knob, but suddenly HISE has stopped responding and I am unable to restore my project on restarting....
Think I'll shut down Windows and start again tomorrow......