unknown error installing/removing sims complete..

[omaha1290]

okay well i finally got it uninstalled which i feel kind of dumb cause i went into the reg edit thing from run and searched sims complete collection and deleted everything that had to do with the sims. and now its gone, but now all of the sudden when i try and install it i get another error saying error getting sku number from registry aborting installation,  {unsure} any of you guys ever got that error or have any idea how to fix it lol