I have converted quite a few apps with this problem - Not really a restriction, just annoying. When I create an installer, the loading bar does not run in sync with the progress.
The image below depicts this. Note that the bar is not even half way, but at the bottom, it says "Progress Complete".
I'm not sure whether you can do anything, but even if you did not know this, it has been brought up. Is it just my copy? Because I have downloaded the installer quite a few times and it doesn't seem to fix.