Hi!
I guess I should have slept a little more over the past few days – the error was stupid!
I had done some modifications in the custom_functions.php – which worked well. BUT, during the final saving of that file (after only editing a comment in the code) there must have been a problem with the connection and the file somehow got screwed up. When I checked the file this morning, I found some weird characters in the middle of “function geodir_show_detail_page_tabs()” – this has caused that behavior.
Sorry for that, but I was looking for hours in the forums etc. without finding anything before posting this last night. It still is strange that I didn´t get any error message but got redirected to the blog… I´ll have a look into that later, now I need to catch up with my work as I lost quite some time due to stupidity…
Thanks a lot anyway!