Router Linksys won't install

Hi, I have a Lynksys router WRT54GL 1.1 and impossible to install it on my new windows 7 computer. I got an error message (see picture attached) at the end of the installation wizard.
On the other hand, when I try to install the same router on my old computer with windows XP everything goes OK.
No idea what's going on. I really need help.
Thanks in advance.

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