Sorry I missed that the two lines were different.
And the PStore4/ at the beginning was removed:
Now: <?php echo WA_getCMSContent($database_PowerStoreConnection, $PowerStoreConnection, 'Opening Web Page', 'LOGO', false); ?>
New error message
Fatal error: Call to undefined function rel2abs() in /home/eriss/public_html/PStore4/webassist/cms/cms.php on line 36
What should I try next.