I get the error 'The file does not begin with "%PDF- .....

[HVSoftware]

Can you tell me if this is due to my installation?

[barryvdh]

Not sure, can you be more specific?
What is the code you are using to generate the PDF? What is the full error?

[HVSoftware]

I only get an dialog within my Chrome with a message about an incorrect PDF. I have include the package inside Composer.json and run "Composer update".

I used the code in the example

use \Barryvdh\DomPDF\PDF;

class ReportController extends \BaseController {

public function getInvoice($id)
{
    $pdf = new PDF;
    $pdf->loadHTML('<h1>Test</h1>');
    return $pdf->stream();
}

}

[HVSoftware]

Do I need to use something like: php artisan config:publish

I temporary used https://github.com/thujohn/pdf-l4.

[barryvdh]

Does download instead of stream work?

[HVSoftware]

In this case I get the following error: Undefined offset: 2

case 'procset':
$o['info']['procset'] = $options;
break;

case 'mediaBox':
  $o['info']['mediaBox'] = $options;
  // which should be an array of 4 numbers
  // Harry:The application breaks on this line.
  $this->currentPageSize = array('width' => $options[2], 'height' => $options[3]);
  break;

[barryvdh]

Okay, it doesn't seem to work very well when creating a new class.
I suggest using the facade or the App container:

$pdf = app('dompdf');
$pdf->loadHTML('<h1>Test</h1>');
return $pdf->stream();

//Or with Facade:
return PDF::loadHTML('<h1>Test</h1>')->stream();

I will see why this doesn't work otherwise.

[barryvdh]

Should be fixed with this commit: 55cd8c8
Problem was that the ServiceProvider was deferred, so the config wasn't loaded when using the class directly.
You may need to remove the serviceprovider from app.php, open a route and add it back, so the meta/cache is updated.
But using App::make('dompdf') and the Facade work also fine.