rebuilding images not working

[imported_420]

when you change the quality of thumbs, then rebuild, it rebuilds the thumbs to the new quality...so a 100% quality picture that is 100k, changed to a 69% quality thumb, reduces to 30k in file size...
this only works for thumbs...
it will not work on the large images...
i need this function to work so i can cut my bandwidth in half with the click of a button instead of spending a week doing it...

[ConqSoft]

Did you choose "Normal Images" in the dropdown for the type of image to rebuild?

[imported_420]

yup

[ConqSoft]

And?

It got an error? It said it did it, but didn't? Or?