Installing other Sims 3 discs

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Penguin99 Posts 1 Registration date Monday September 29, 2014 Status Member Last seen September 29, 2014 - Sep 29, 2014 at 12:58 PM
I downloaded a new Sims 3 game called Sims 3 Show Time. It didn't work because it said the short cut had problems. I believe I can fix it by installing the original Sims 3 disc. My question is, do I have to uninstall the Sims 3 Show Time program first and then install it again after I download Sims 3?

Can I down load a Sims 3 game again if I have the same product code?