Disable => Enable RichText button errors - Could not find the target element

I just upgraded to the latest version of wysiwyg (hoping to address another issue) and now when I select Disable Rich Text, I see the raw html but when I attempt to select Enable Rich Text (to turn it back on) I get the error "Could not find the target element" and anything that was in the body field is gone.

I'm running D5 with (form the Wysiwyg change log file) 5.x-0.4, 2008-10-14.

Note: something odd did occur during the upgrade.
1) I attempted to use Drush but it said it found no available upgrades. I was however running 5.x-0.3
2) So, I renamed the wysiwyg folder to wysiwyg-old. Unpacked the new version. Moved over the tinymce subdirectory and ran update.
3) After Update when I visited the modules control panel I was given the the following error:
# user warning: Duplicate entry 'FullCore' for key 1 query: INSERT INTO wysiwyg_profile (name, settings) SELECT name, settings FROM tinymce_settings in mysite.com/includes/database.mysql.inc on line 172.
# user warning: Duplicate entry 'Authenticated User-5' for key 1 query: INSERT INTO wysiwyg_role (name, rid) SELECT name, rid FROM tinymce_role in mysite.com/includes/database.mysql.inc on line 172.
I never saw this again but I did check to see if these two profiles still existed and they do.
4) When looking through the modules list I noticed that wysiwyg was not in the list and I thought that renaming the folder could have been the problem so I removed the -old folder. wysiwyg appeared and seemed to be working - until I found this problem.

Any help would be great.
thank you
Cozmo