Cant create file via suitescript 2.0

Hello,

Just wondering if anyone else has seen this.

I'm trying to create a file via a restlet with the following code:

require(['N/file'], function (file) {
        var fileRequest = {
            name: 'test' + '.txt',
            fileType: file.Type.PLAINTEXT,
            contents: 'test',
            encoding: file.Encoding.UTF_8,
            description: 'test',
            folder: 165
        };
        try{
        var file = file.create(fileRequest);
        }
        catch(ex){
            debugger;
        }
        var fileId = file.save();
});

But everytime i run this i recieve an error with the following message: 'Unexpected Error'.