How to copy sqlite database from applicationDirectory to documentsDirectory

Question

I am having problems using the ‘File’ function in Adobe Flex to copy a sqlite database from the read only applicationDirectory to the users documentsDirectory.  When I use the code below the only thing that appears in the user documentsDirectory is a 1k to 4k file.  The actual file size of the database is around 350k.
Am I not giving the file enough time to copy over?
I am developing on a Mac but I think I remember duplicating the error on a PC as well.  This bug has been keeping me from launching my app for far too long.  Any ideas would be appreciated.
Here is the code I am using:
public function copyDB():void
          var dbFile:File = File.applicationDirectory.resolvePath("db/myDataStorage.db");
          var dbWorkedFile:File = File.documentsDirectory.resolvePath("myDataStorage.db");
          if(!dbWorkedFile.exists){
                    trace("db Does Not Exist");
                    dbFile.copyTo(dbWorkedFile);
          } else {
                    trace("db Exists");
                    //The database has already been installed.  Launch app.
          dbConn = new SQLConnection();
          dbConn.openAsync(dbWorkedFile);
I got the above code from this Adobe Cookbook recipe:
http://cookbooks.adobe.com/post_Include_existing_SQLite_database_in_an_AIR_applica-10483.h tml
Thanks

Answer 1

I got it working. 
I tried the copyToAsync method and it did not work.  While testing the copyToAsync I found a path that brought me to the
'preinitialize' phase of the application startup sequence. 
I fixed it by calling my copyDB() function from the 'preinitialize' call in the windowedApplication tag like:
preinitialize="copyDB()".
I had been calling it from the applicationComplete phase of startup.  Now it seems so obvious.
Thanks again for sending me down the path that finally fixed it.