Hi Barry, so the part about telling the node editor which file to load using a file= parameter in the URL is a little buggy in the node editor code.

To fix it, open the node editor file init.js and find this on line number 44:

	var data = '', loadFilePath = NeParameters.file.replace(/%5C/g,"\\");

change it to this instead:

	var data = '', loadFilePath = decodeURIComponent(NeParameters.file);

Then the code to use it should go like this:

function openNodeFile() {
    try {
        // Open the file selection dialog
        filePath = moi.filesystem.getOpenFileName('Open', 'MoI Nodeeditor files (*.nod)|*.nod');
        if (!filePath) {
            moi.ui.alert('No file selected.');
            return; // Exit if no file is selected
        }

        // Alert the selected file path
        moi.ui.alert('File selected: ' + filePath);

        // Put parameter file=path.nod in the URL's search string to have it load the file.
        var url = 'moi://appdata/nodeeditor/index.html?scheme=Light&file=' + encodeURIComponent(filePath);

        // Open the Nodeditor dialog with the correct path
        moi.ui.createDialog(url, 'resizeable,defaultWidth:680,defaultHeight:420', moi.ui.mainWindow);

    } catch (error) {
        moi.ui.alert('Error: ' + error.message);
    }
}

// Run the openNodeFile function
openNodeFile();

Thanks Michael,
works fine now.
Cheers
Barry