Annoying showtime problem.[SOLVED]

Hello, I wonder if you could help me. I've installed sims 3 yesterday, and a couple of expansions too
- sims 3
- world adventures
- Ambitions
- Late Night
- Generations
- Pets
- Showtime
- Supernatural
- Seasons

and Outdoor living Stuff, town life stuff, too
Then I downloaded the ultimate fix, and followed the instructions from 1 to 11, but when i tried to update, my launcher freezed and chrashed, so I downloaded the manual patch (the 1,2 gb one), updated, then copied the crack from the "crack" folder of the fix. The game launched, yay!
The problem is, even though it's installed (and it's icon is in the launcher), the showtime stuff won't work. The life goals are here, and I can choose to be a singer or a magician, but whenever I have the opportunity to give a sing-a-gram, when I arrive to the sim's house, the procedure icon in the upper left side disapperas. My sim's wearing the career suit, and he is not teleported back, as I read in some forums. He just stands here.
When I try to load Starlight Shores, the loading bar reaches about 20% and the game simply closes without any message.
Everything else works properly.
Can you please help me, or give some advice? Thank you in advance.
(Sorry for my english, I'm hungarian.)

If I remember correctly, that was a possible mod conflict, although I can't recall which mod caused it. So if you have any mods, I'd start with removing them.

Hello, thank you for the advices In the meantime, I noticed
something: In the buy/build mode, I can't find any showtime furniture. I
mean, they are there: empty squares, with prices, but without picture
or description. I can't buy them.
When I try to do sing-a-grams, the
progress icon at the upper left corner is there, but empty. There is a
description, but no picture in it. When I arrive to the sim, it just
disappears.
I do not use any mods. My career outfit is
just a copy of my normal outfit. I've tried to make a second career
outfit, it didn't helped.
Is it related to patches maybe? I'm thinking about a reinstall, is there a way to do it with Showtime only, or do I have to reinstall the whole sims 3 content? (everything else works perfectly)

It works now, thank you so much