Like the title says I can't exit my game, I have all ep's but showtime and into the future and only the high end loft and town life sp's. As well as most store content, buy and build content from here and tsr. I can use the the task manager to exit but I feel that it's just as bad as turning your computer off using the power switch. It has yet to cause problems but I'd rather be safe then sorry. With regards to the objects I've gone through and used Delphy's Dashboard, and have cleared out all corrupt, duplicate or otherwise problematic files. I know it's not a fail safe but it's helped a lot.
Here bellow is my DxDiag