ORM ORI cannot create an instance of a model object

I create a model object as follows: $ object1 = new Object1 (); There is a table in the database named object1s. The Object1 class is an empty class that extends DataMapper. It works without a problem. I can save data and retrieve data from the database (I see this with a separate database client).

I tried to do the same with another object (and another table), for example $ object2 = new Object2 (); This time I get the following error message:

Fatal error: calling member () member function for non-object in /Applications/XAMPP/xamppfiles/htdocs/c/application/libraries/Datamapper.php on line 6049

Line 6049 is as follows:

return $ this-> lang-> line ($ key);

When I created an instance of Object1, at this moment $ this-> lang, an instance of DM_Lang was installed, but when creating an instance of the second object $ this-> lang it was set to "en". The only difference between the two is the name and table of the database.

What can I do to fix this? Why are they different? Where is $ this-> lang installed (I already went through the debugger and can't find it)?

The database is MySQL. I run this for development on MacOSX Lion. The web server is apache. I am using DataMapper ORM v1.8.2.

There was a comment requesting the exact code. This is the complete exact code that I tested with (I copied and pasted from each file).

Object1 is called Movie, models / movie.php:

<?php

class Movie extends DataMapper {

}

Object 2 is called Image, models / image.php:

<?php

class Image extends DataMapper {

}

The controller looks like this: controllers / test.php:

<?php

class Test extends CI_Controller {

    public function newdata()
    {
        // The following line runs as expected
        $movie = new Movie();
        // The following line fails with the Fatal error mentioned above
        $image = new Image();

    }

}

, DataMapper v1.8.2. index.php , CodeIgniter.

/* --------------------------------------------------------------------
 * LOAD THE DATAMAPPER BOOTSTRAP FILE
 * --------------------------------------------------------------------
 */
        require_once APPPATH.'third_party/datamapper/bootstrap.php';

Movie. , SQL.

, "$ image =..." , "$ movie =..." . , , .

CI_VERSION = 2.1.0.

.