Not able to create category

[nononsense]

I'm getting this error while viewing the category tab:
Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in D:\www\--url--\www\portal16\libraries\joomla\database\database\mysqli.php on line 345 Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in D:\www\--url--\www\portal16\libraries\joomla\database\database\mysqli.php on line 345

When creating one i get:
Warning: Invalid argument supplied for foreach() in D:\www\--url--\www\portal16\libraries\joomla\database\database\mysqli.php on line 727 Warning: Invalid argument supplied for foreach() in D:\www\--url--\www\portal16\libraries\joomla\database\database\mysqli.php on line 727 Warning: Invalid argument supplied for foreach() in D:\www\--url--\www\portal16\libraries\joomla\database\database\mysqli.php on line 727

And:

Warning: Invalid argument supplied for foreach() in D:\www\--url--\www\portal16\administrator\components\com_phocadownload\helpers\phocadownload.php on line 19

(--url-- is the domain name involved)

The result is that i cannot create a category.


I've used both 2.00 and 2.00-RC3

[Jan]

Hi, enable debug mode to get info about the problem in database.

Jan