@David-Healey Nice! And thank you for putting these resources together, they are an incredible source of info and help for beginners like me, and the wider HISE community.

@David-Healey thanks for replying. I think i sorted it out. After a brief chat with Claude, it said:

This is a known HISE issue related to file locking - something (another program, antivirus, or even HISE itself) is preventing write access to your script files. Here's how to recover:

Immediate Recovery Steps

1. Close HISE completely

2. Check the TempScriptDirectory

Those JS files in Scripts/TempScriptDirectory are actually your current scripts - HISE puts them there when it can't save to the normal location. This is good news - your work exists.

3. Manually restore the scripts
   Navigate to your project's Scripts folder. You should see:

Your normal script files (possibly corrupted/empty)
TempScriptDirectory/ containing the working versions

Copy the files from TempScriptDirectory back to their correct locations:

ScriptProcessors/YourProject/Interface.js (or wherever your interface script lives)
Same for each ScriptFX

4. Check what's locking the files
   Common culprits:

Cloud sync (Dropbox, OneDrive, iCloud) - if your project is in a synced folder, this is very likely the cause
Antivirus scanning the files
Text editor with the JS files still open
Git or other version control

5. Restart HISE and reload

Preventing This in Future

Don't keep projects in cloud-synced folders (or pause sync while working)
Close any text editors that have script files open before saving in HISE
Add your HISE projects folder to antivirus exclusions

I then proceeded to leave all my HISE folders and docs out of syncing with OneDrive, copied all the script files from the temp folders of all my projects, and pasted them into their respective 'normal' project script folders. Seems to be working with both saving and loading now.

@ustk Okay I understand, thanks. Since I'm new to this I just wanted to check what the norms are so I don't do something wrong. I am an advocate of giving credit where credit is due!

@Christoph-Hart That's great, thank you for answering!