TCPDF - PHP class for PDF

There is problem with images and https. On a page I have an Paypal Logo
embedded I tried to convert it to PDF with TCPDF I get following error
messages:


Notice: getimagesize() [function.getimagesize]: Unable to find the wrapper
"https" - did you forget to enable it when you configured PHP? in
d:\sites\xy\site\plugins\xyToPDF\tcpdf.php on line 3659

Warning:
getimagesize(https://www.paypal.com/de_DE/DE/i/logo/lockbox_80x35.gif)
[function.getimagesize]: failed to open stream: Invalid argument in
d:\sites\xy\site\plugins\xyToPDF\tcpdf.php on line 3659

Notice: imagecreatefromgif() [function.imagecreatefromgif]: Unable to find
the wrapper "https" - did you forget to enable it when you configured PHP?
in d:\sites\xy\site\plugins\xyToPDF\tcpdf.php on line 3704

Warning:
imagecreatefromgif(https://www.paypal.com/de_DE/DE/i/logo/lockbox_80x35.gif
) [function.imagecreatefromgif]: failed to open stream: Invalid argument in
d:\sites\xy\site\plugins\xyToPDF\tcpdf.php on line 3704

Warning: imagejpeg(): supplied argument is not a valid Image resource in
d:\sites\xy\site\plugins\xyToPDF\tcpdf.php on line 3809

Warning: imagedestroy(): supplied argument is not a valid Image resource in
d:\sites\xy\site\plugins\xyToPDF\tcpdf.php on line 3810

Warning: getimagesize() [function.getimagesize]: Read error! in
d:\sites\xy\site\plugins\xyToPDF\tcpdf.php on line 3824
TCPDF error: Missing or incorrect image file:
d:/sites/xy/site/plugins/xyToPDF/cache/\jpg51.tmp

Curl extension is installed. You should wether use curl if enabled or skip
https-stuff.
Thanks for your work
Robert