[Webtest] Running webtests on https protocol

[Gert Pauwels]

Hi,
I am having trouble running webtests on a url using the https protocol.
My main url is https://promo.myself.be/something?LANG=EN&AndSoOnAndSoForth.
I keep getting the same error message: Unknown host promo.myself.be. 
 
Running webtests on http: is fine.
 
Any advice?
Thanks
 
Gert