[TYPO3-install] Error | No pages are found on the rootlevel!

[contact at spintria.com]

Hello,

This is my first e-mail so sorry if it is not clear enough...

I just installed Typo 3 

4.2.6 Source with Dummy site  and get following errors:



mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /homepages/8/d245642030/htdocs/sounddesign/typo3_src+dummy-4.2.6/t3lib/class.t3lib_db.php on line 809

Warning: mysql_free_result(): supplied argument is not a valid MySQL result resource in /homepages/8/d245642030/htdocs/sounddesign/typo3_src+dummy-4.2.6/t3lib/class.t3lib_db.php on line 836

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /homepages/8/d245642030/htdocs/sounddesign/typo3_src+dummy-4.2.6/t3lib/class.t3lib_db.php on line 809

Warning: mysql_free_result(): supplied argument is not a valid MySQL result resource in /homepages/8/d245642030/htdocs/sounddesign/typo3_src+dummy-4.2.6/t3lib/class.t3lib_db.php on line 836

Warning: Cannot modify header information - headers already sent by (output started at /homepages/8/d245642030/htdocs/sounddesign/typo3_src+dummy-4.2.6/t3lib/class.t3lib_db.php:809) in /homepages/8/d245642030/htdocs/sounddesign/typo3_src+dummy-4.2.6/typo3/sysext/cms/tslib/class.tslib_fe.php on line 944


Please help. 

Thanks


Andrés