In case you have problems
1)Make sure you set the correct path for each editor at the include() line.
2)Open editor's class file and see what arguments you should pass to the constructor.
for example my version of koivi (/class/xoopseditor/koivi/formwysiwygtextarea.php )contains
/**
* Constructor
*
* @param array $configs Editor Options
* @param binary $checkCompatible true - return false on failure
*/
function XoopsFormWysiwygTextArea([color=00CC66]$configs[/color], $checkCompatible = false)
so the line "$editor = new XoopsFormWysiwygTextArea($editor_configs);" should work.
Other versions of koivi might not use the same arguments.
Note : $editor_configs is an array of arguments defined in functions.php of news module.