Please Help with error message

[binto]

I get this error message when I click on a sub category in the New Lisitings page.
Someone kindly explain.

Warning: First argument to array_keys() should be an array in ../lib/category.class.php on line 233

[binto]

I get this one when I click on broken link report in the admin cp.

Fatal error: Call to a member function on a non-object in ../lib/category.class.php on line 290

Please respond

[dody]

Seem your category structure is corrupt. You can check it at admin cp -> category -> view hierarchy.

Then indexu will point which category that miss it's parent.

[binto]

There are some categories that say;
WARNING- This Node has lost parent at node no:xxx (Previously undefined)

How do I fix this?

[dody]

You need to change its parent id. Please copy this file to /admin, then when viewing category hierarchy, click the link. Then you can edit category's property.