[@akkkarki Participant 12 years, 6 months ago]

Meanwhile I’ve solved the problem myself; it was a just a silly exception, which caused the page not to load wholly. Here’s my solution:

in the /themes/academica/functions/theme/functions.php change this part (lines 143-149):

    } elseif ( is_single() ) {
      if (!is_attachment()) {
      $cat = get_the_category(); $cat = $cat[0];
      echo get_category_parents($cat, TRUE, ' ' . $delimiter . ' ');
      echo $currentBefore;
      the_title();
      echo $currentAfter; }

to this:

    } elseif ( is_single() ) {
      if (!is_attachment()) {
	    $cat = get_the_category(); $cat = $cat[0];
		//support bbPress
		if (empty($cat)) {
		  echo $currentBefore;
          the_title();
          echo $currentAfter;
	    } else {
		  echo get_category_parents($cat, TRUE, ' ' . $delimiter . ' ');
          echo $currentBefore;
          the_title();
          echo $currentAfter;
		}
      }

That’s it, bbPress now works like a charm! 😉

Cheers!