Hello,
trust me, I have read all of the previous threads how to deal with this. Nothing helped and my host says it's a programming error. So please, please, is there anyone out there who can help me with the following?
I have installed WP 4.2.1 for the third time, including deleting and setting up new databases every time. I go to themes, install themes, upload, choose the correct .zip (uploading it worked on other WP sites), press install, it uploads to 100%, reloads - 500 Internal Server Error. My errorlog says Premature end of script headers.
So I try with different themes, all of them purchased on themeforest and happily running on other websites. Doesn't work either.
My PHP version is 5.4, I also tried 5.5 and 5.6 without success. My .htaccess is fine. I have exchanged both wp-includes and wp-admin folders entirely at least four times by now. My PHP memory is not exceeded.
What on earth am I missing???
Thank you in advance. I am desperate.
