My game is unplayable after installing a new pack

Hi everyone!  I have not picked up the game since last October, so it's been a little shy of a year since I played last, and it ran perfectly last time.  I own the Cats & Dogs pack and the Tiny Living stuff pack.  I just recently installed the TL pack the same day I started playing the game again, but not sure if Cats & Dogs automatically updated or not since I last played.  I have not changes any settings on my computer, or hardly touched it for that matter in the year I stopped playing, so I have a feeling that one of the packs might causing my issue.

When I load up a brand new game, the screen goes white and acts as if it's loading, I even get the spinning cursor in the middle, but it doesn't go past that screen.  The game will not even close down properly after I get this screen, so I'm forced to shut down the whole computer just to exit the game and try again.  I was able to play on older saves for a couple of days and go on build mode (without playing with a sim or placing a household).  Now, if I exit build mode and play on my lot, no menus appears on the top, no cameras, no notifications, nothing.  I can click on the buttons, but none of the menus appear or drop down.  Also the game is just permanently stuck on pause when it finally loads in, and I can't unpause it because of the whole no menus issue.

I'm relatively new to playing on PC versus console, so the only thing I can think to do is uninstall everything, including all packs and mods, and just starting fresh.  I'd like to avoid that if I could, though but anything to make the game playable at this point.  I would appreciate any and all help!  Thank you!