I want to create a Document in Google Drive from a BLOB generated from another document.
I've tried this simple example :

```
  var doc = DocumentApp.openByUrl("https://docs.google.com/document/d/[My document]/edit");
  var docContentBlob = doc.getBlob();

  var newDocBlob = Utilities.newBlob(
    docContentBlob.getDataAsString(),
    "application/vnd.google-apps.document",
    "TEST DOC BLOB");

```

This script create a document, but I can't open it (it display 'Loading, please wait' when I try to open the document and It never opens.

Why this script don't work?