Wow, sorry for forcing you to find the answer. We did some investigation, to no avail. We'll definitely take note of this in the future to see if there's a better way we can detect the version installed.
When you say you installed it "directly", does this mean you overwrote what was there, instead of using the installer? Just trying to figure out if it's something that may be more common or not.
Thanks so much for reporting your findings back here!