This is not exactly the same because there are two different Mp3tag versions:
The one is for (older) 32-bit systems -> usually installed in C:\Program Files (x86)
The other one is for (newer) 64-bit systems -> usually installed in C:\Program Files
My version is the 64-bit-variant, downloaded from here with the name
mp3tagv319-x64-setup.exe
and yours seems to be the 32bit-version:
mp3tagv319setup.exe
I assume, that you currently have a mixed installation for both versions.
Please check the following:
Do you find Mp3tag in both of your local folders:
C:\Program Files (x86)
and
C:\Program Files
Please follow the instructions here: