I didn't have the most recent version, so I uninstalled it and installed the latest. Very nice mod, and it does give some of the functionality that is missing from the core SMF. The main disadvantage, that the poster cannot see the image he uploaded until he commits by clicking the "Post" button, still is there.
That's not really your issue, as SMF doesn't upload the image itself until you click "Post". I'll need to take a look to see what's under the hood to see if I can change it to upload the pic on clicking the "Preview" button as well.