[Typo3] Site down - plz help!

[Michael Stucki]

Henrik Eriksson wrote:

> I've got a huge problem! When I was adding new content to our live site
> everything crashed after saving. This is the error-message I've got when I
> click on the page tree:
> 
> *Warning*: mysql_num_rows(): supplied argument is not a valid MySQL result
> resource in *D:\web\Oursite\www-root\typo3\t3lib\class.t3lib_db.php* on
> line *729*
> *Warning*: mysql_free_result(): supplied argument is not a valid MySQL
> result resource in *D:\web\**Oursite**
> \www-root\typo3\t3lib\class.t3lib_db.php* on line *766*

Enable $debugOutput in class.t3lib_db.php (thanks to Windows you'll find
that file twice!) to see where the problem comes from.

As a workaround: Set display_errors to false (either in PHP or if you use
3.8.0, you can set this in the Install Tool).

- michael
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