Error after upgrade to 3.5.1

I get the same error:

Using access token:
Warning: file_get_contents(https://api.instagram.com/v1/tags/**tagname**/media/recent?access_token=) [function.file-get-contents]: failed to open stream: HTTP request failed! HTTP/1.1 400 BAD REQUEST in **path**/blog/wp-content/plugins/instagrab/instagrab.php on line 246

I think this is on line 246:
$data = json_decode(file_get_contents($apiurl));

PS ** = changed for privacy

same here…