help!
Fatal error: Non-static method cGraphicMediator::__checkFailed() cannot be called statically in /var/www/vhosts/nomesito.it/httpdocs/ScriptLibrary/cGraphicMediator.php on line 369

if ( $this->bResize )
{
$bSuccess = $this->rImageEditor->resize( $this->nResizeWidth, $this->nResizeHeight, $this->bKeepAspect );

# Write the size changes back in the uploader object
$this->setNewDimensionsInUpload( $this->rImageEditor->getWidth(), $this->rImageEditor->getHeight() );

<font color=red>__checkFailed( $bSuccess );</font id=red>
}


What is the problem!
tanks!
linux
php 5
GD2