A newer version of this product is already installed

[Sjors1]

Hello all,

I have a real strange problem.
I have DL plesk_8.1.1_build070326.13.exe to a new Windows 2003 machine.
It is a TOTAL clean machine.
When I try to install plesk I get a the error A newer version of this product is already installed.
But I have never installed Plesk before and for sure not on this clean machine.
Can someone help me out how to solve this problem ?

Thanks Sjors