I have created links directly to the necessary patch from Microsoft in the Prerequisites section of the StorURL application page. If you are having problems launching the latest versions of StorURL, this is most likely the issue you are running into. There is a different patch download depending on if you are using Windows 7 or Windows 8/10, so make sure you grab the correct one.
If you have installed this patch, and you are still unable to launch StorURL, please get in contact and I'll hopefully be able to help troubleshoot and resolve the problem.