Well, I installed sims 3 with most of the expansions ect ect. I googled around, and read that this line in log, => DasmX86Dll.dll not found. has nothing to do with the crashing. Im little sceptical, but no other information was found than that line in the error log is some debug module that is not in the release of the game. That is shorted out, now lets carry on.

How I fixed it, shortly:

I added The Sims 3 exes to the windows Data Execution Prevention ( DEP )
^ This alone didnt seem to solve the problem however, even when some people say that this would fix the problem, lets carry on..

Deleted cache files in "My Documents\Electronic Arts\The Sims 3" called:
CASPartCache.package
compositorCache.package
scriptCache.package
simCompositoryCache.package

Install All patches with: The Sims 3 Patch Downloader
Link Here
Run it, lets it do its magic.

Install The Sims 3 Crash Log Analyzer:
Link Here
Run it, and let it do its magic too, its awesum :3

^ This said the DEP as the error for the crashes, however I had already added the sims 3 to the DEP list,
only the main exe files.

Then I cleared the whole prefetch foulder. Yes I know that only the relevant files to the sims 3 should be deleted only, but I went ahead and deleted them all. Not sure if this has any effect, but I read somewhere that this might solve the problem.

And now Im gaming without crashes so far. Thanks for all contributors on the guides on this website, realy love it. Also special thanks for The Sims 3 Patch Downloader & The Sims 3 Crash Log Analyzer

-Arnid