"Missing A Temporary Folder" error in Wordpress 3.2.1

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A wordpress site I was recently working on suddenly started getting an error "Missing a Temporary Folder" when trying to upload an image file. There were lots of suggestions to change settings in htaccess, php.ini, create /tmp and /wwwtmp directories, but none of these worked for me. Then I found this solution:
Shivasoft Solution to Wordpress 3.2.1 "Missing a Temporary Folder" Problem"

This solution worked for me - I simply installed Dean's FCKEditor for Wordpress - I did not even Activate it - and issue resolved. Hope this helps someone else!