Platform Movement Extension Problem

[milkteabunny]

So I downloaded Multimedia Fusion 2 onto my home laptop for a school project, which my school computer also has MMF2. With already having built most of my game at school, I transferred over the file to my home laptop to continue working on it. However, when I try to open the file in MMF2, it tells me that I need the Platform Movement Object Extension (platform.mfx). I searched and searched all over the internet for a solution, but I haven't found any.. I also tried looking for a download for the extension, resulting in no luck.
Can anyone help me with my problem, please? This is really urgent.

[nivram]

It is in the MMF2 Bonus Pack 1.

Marv

[milkteabunny]

It is in the MMF2 Bonus Pack 1.

Marv

I saw that after going through many websites to find it. I found the MMF2 Bonus Pack 1, downloaded it, but when I tried to finish installing it, it told me that I didn't have MMF2 downloaded, which I do have installed.