The Sims3 Welcome screen Blank

I Recently Re-installed the sims 3 and Applied your crack carefully !!
As I Have the original sims 3 base game i have registered it but now i don't get a welcome screen in the launcher!!
It remains blue and as soon as i go to the game updates and re-login from there it goes white!! But Blank still!!
Help!!

Picture please! This will help me understand what it looks like!

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Have you messed with any other files other than placing the crack? Where did you get the crack? From the torrent or from the ultimate fix?

Does the game still work fine? Is there a reason you need the welcome screen to come up?

The Game works fine and I am a registered user of the sims 3 game !!
Moreover I didn't messed up with any file!!
I can log-in from inside of game but I'm unable to do such in the launcher!! I need it to go to exchange and do things quickly from the launcher itself!!!!

Sometimes the launcher just stops working. You don't really have to do anything for this to happen. I'm not sure if there's any way to get the launcher working again, as we consider it to be kind of a pointless/extra piece, and just advise people to bypass it and use an alternative method to install cc if needed.