That's super-oddball.
First, you
do not need to uninstall MC in order to reinstall it. Most users here update to new builds regularly without first uninstalling the old version. That's the generally recommended method. If you have serious issues, removing and reinstalling it can be a useful troubleshooting step, but generally this isn't required.
So, step one would be to
download the most recent build of MC, and install it overtop of the one you already have installed. It is likely this will fix your issue.
It is also possible that
security software of some kind is blocking MC's access to the (required) JRTools.dll file. As explained in the link, sometimes turning "off" your Anti-Virus application doesn't actually disable very much.
If not, please post back.
I am an Audio guy not a PC guy so all these issues I see in the forum really makes me wonder if I should have bought this software..........
This is, by-no-means, a common issue. I've never seen a report like this before.
Also, keep in mind, that the people who come here to participate are often the people who are having trouble. In other words, there is a massive "silent majority" out there. There is a large core group of people here who try to help and all of us run the software every day, and we aren't having anything like this at all.
My guess is that something got borked during your installation. Perhaps interference from your AV software caused it (this is common, I can't install Adobe Creative Suite at all with Symantec Endpoint Protection enabled, or it comes in completely broken), or perhaps something else went wrong.
In any case, install MC again overtop of the existing installation, and I bet it will fix you up.