I know this is a 2 year old thread, but I've just run smack into the same issue. Same error message, and everything. On TWO machines.
Using a fresh download on laptops that've never even seen the app before, so a corrupted older version is off the table, also. Sadly, I can't find an older version to try on the Mazda site.
I'm running Windows 10 HP, I am an administrator, and I have also tried "run as admininstrator". Every attempt gives the same error message as in the OP.
This is a fresh laptop (about a month old) and it wasn't an issue on an earlier laptop (also Windows 10), nor my wife's (also Windows 10). Suddenly, it's a problem on both hers and mine!
Did it ever get fixed properly or am I simply out of business when it comes to using the toolkit?