MediaLibary Component Support

hi
i am testing this component and it seems to be the one i searched for a long long time...

everything worked fine, but i get a blanc error-page (backend) everytime i activate the amazon-thing inside the "media"-form and save the media. i get the same result if i insert the buy it here-adress below this form. everyxthing is alright and works as long i keep "for my own" and an empty "buy it here"adress.
all errors come, if i save the media. after that i get a popup - pleace enter title and then a whitescreen with this errors.

Warning: simplexml_load_file() [function.simplexml-load-file]: http:// wrapper is disabled in the server configuration by allow_url_fopen=0 in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1030

Warning: simplexml_load_file(ecs.amazonaws.de/onca/xml?AWSAccessKeyId...3Cy%2Bpfetq%2Be7k%3D) [function.simplexml-load-file]: failed to open stream: no suitable wrapper could be found in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1030

Warning: simplexml_load_file() [function.simplexml-load-file]: I/O warning : failed to load external entity "ecs.amazonaws.de/onca/xml?AWSAccessKeyId...pfetq%2Be7k%3D" in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1030

Warning: array_key_exists() expects parameter 2 to be array, null given in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1033

Warning: array_key_exists() expects parameter 2 to be array, null given in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1039

Warning: Invalid argument supplied for foreach() in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1048

Warning: array_key_exists() expects parameter 2 to be array, null given in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1061

Warning: array_key_exists() expects parameter 2 to be array, null given in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1073

Warning: array_key_exists() expects parameter 2 to be array, null given in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1078

Warning: array_key_exists() expects parameter 2 to be array, null given in /srv/www/httpd/phost/e/at/pytalhost/easternst...library.class.ws.php on line 1096

Please turn on "allow_url_fopen" - option in yours php.ini - or ask about that from yours host provider

Thanks,
Andrew