cant install full game!?

[esone]

I got a strange problem with the game tony hawk 4 on pc..
I have a backup of the game and I would like to use no_cd patch..
And to do that I have to do the following:

Install the game - Full Installation.
Copy the following files from CD#2 to the Game Directory:
DataXXX.tgr
Replace the original <GameDir>\START.EXE executable with the one from the File Archive.
Replace the original <GameDir>\GAME\SKATE4.EXE executable with the one from the File Archive.
Play the Game!

I have done this before..installed the full game,replaced files..etc..and the game worked fine!
I uninnstalled the game after a while,but now I will play it again..
BUT..now I cant get it to innstall full installation...WHY!?
I tried over and over again..
installation from cd and fron image file using deamon tools..nothing work!
Only typical install works..!

Does someone know why?