fail with Opera 9.20

[caroso]

A possible solution: In file "fckeditor.php"

	else if ( strpos($sAgent, 'Opera/') !== false )
	{
		$fVersion = (float)substr($sAgent, strpos($sAgent, 'Opera/') + 6, strpos($sAgent, '.') - strpos($sAgent, 'Opera/') - 6) ;
		if ($fVersion > 9)
			{
			return true;
			}
		else if ($fVersion == 9)
			{
			return ( (int)substr($sAgent, strpos($sAgent, '.') +1, strpos($sAgent, '(') - strpos($sAgent, '.') ) >= 5);
			}
		else 
			{
			return false;
			}
	}

[Alfonso Martínez de Lizarrondo]

the compatibility is for Opera 9.5

You can find betas here: ​http://my.opera.com/desktopteam/blog/