[SOLVED] White screen with footer text after activation Atahualpa 3.5.1

I installed Atahualpa 3.5.1 on my local webserver and it works perfectly. When I uploaded the theme on a webserver at my hosting provider I only saw a white screen with text, links included, from the footer. (Powered by WordPress & the Atahualpa Theme by BytesForAll. Discuss on our WP Forum).
I have multiple websites at the same hosting provider with the Atahualpa theme (version 3.4.9) and they all are perfect. I tried many themes on my (troubled) site and all of them are working well.
I realy don't understand what caused the problem. In another topic in this forum I saw a similar problem but I could not find an answer to solve the problem.

I hope someone can help me. Thanks for your attention.

Greetz,
Piet Geelen