How to fix "Quit" Error during Installing Sims 2 Double Deluxe?

I just bought my game earlier today and everything else goes well during installing. Then the page where you can click on checkboxes what to install, I click the "Next" button and it says "Are you sure you want to quit installation?" So I click "No" and try clicking "Next" again but it just keeps saying the quit thing. Same thing if I click "Cancel" and if I click the "Back" button, all it does is take me back to the page where it asks you where do you want to install the game.

I know there have been others who have faced this problem and got it fixed but none have posted how they got it fixed online. Please help. Thanks in advance.

PS: I'm also installing my game in an external hard drive, but so far doing that is not the issue. Just so you know. Thanks again.
 
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