Sims 3 Exception Raised Error

For the past two or three months I've been getting the dreaded exception raised error while playing my game. A few minutes into playing it says "Unhandled page fault on read access to 0x000003fc at address 0x005c75e7" I play on a mac in windowed mode and I've played for years on it without issues until recently. I've tried playing without custom content and I've deleted all of my current games and started new ones. Once I start a new game it's fine for a few days but then the error comes back and it makes it impossible to play for more than 10 minutes. I've tried to do research but I haven't been able to find an actual solution so I'm hoping someone can help.