Hey Mennauu,
Checkout this question on the FAQs pageit may help or provide some clues about this issue:
-> Browse to: http://lifeinthegrid.com/duplicator-faq
-> Find question: "I got an 500 server error message what should I do?"
500 errors are sometimes hard to trace down without help from the server admin...
Hope that helps!
Hi Maxxedout,
Thanks for posting your work-a-round!