YouTube requests doesn't send developer_key

[gogume]

In method ZendGData\App::performHttpRequest at line 625
$this->_httpClient->setHeaders($headers);
is rewriting the headers and is not passing the X-GData-Key that was set by the ZendGData\YouTube::setHttpClient

My solution is to add all the previous headers from the request object. I added the following code from line 617, but I don't know how this will influence other requests:
$rqHeaders = $this->_httpClient->getRequest()->getHeaders()->toArray();
if (!empty($rqHeaders))
{
foreach ($rqHeaders as $key => $value)
{
if (!array_key_exists($key, $headers))
{
$headers[$key] = $value;
}
}
}

[vnamev]

$tokenArray = $yt->getFormUploadToken($myVideoEntry);
Error: A developer key is required for this operation

http://stackoverflow.com/questions/14348780/php-zend-youttube-api-upload-a-developer-key-is-required-for-this-operation-er/15178075