gtranslate causes parameter 2 error

I installed gtranslate on a site and the users started to get this warning when they uploaded files.
warning: Parameter 2 to wysiwyg_form_alter() expected to be a reference, value given in /home/nhnenc/www/www/includes/common.inc on line 2892.

I installed gtranslate on a second site and this warning started again.

I modified common.inc as described here: http://drupal.org/node/710892#comment-2836432 to get rid of warning.

I think gtranslate triggers something to cause this warning. Especially since it starts after I install gtranslate (twice now.) The latest site only has the bare minimum of modules running ( Google Custom Search Engine 6.x-1.2, GTranslate 6.x-1.7, Wysiwyg 6.x-2.4)