Sounds like someone's trying to run a pirate copy :/
That said, he may just have lost the serial and/or the CD. If so, contact Clickteam and tell them some details (eg: the name it was bought under, the rough date (eg: september/october 2003), the address it was sent to, etc). They may then help you, they've certainly helped me when I lost the serial to TGF.
As long as you can prove you're a legit owner, CT will gladly help you.
Well Jeff never gave me a problem once he checked & saw my name on the purchise list, but the only thing I ever had to ask him for was my TGF Pro serial code.
I had this problem with my serial number. You could always contact Jeff at clickteam and if you can prove ur using a legit copy of MMF, he can most likely help you out.
"Actually sir, we found a tiny unicorn in your exhaust. It was jumping around poking holes in your gas tank." "Oh thank you I did not know that. A tiny unicorn? Wow."
I havent lost my MMF CD, but a friend of mine tells me he did, what does Jeff do about lost CDs if he see's you legally bought it. I know that you need the CD to install the new versions of MMF, which is why I'm asking.