Ok so, I've taken out every recently downloaded custom content download I've made before my game started crashing with no luck. I knew this had to be a CC issue because I tested this in another neighborhood with the same result. Everytime I go into the build catalog and hit "doors and windows" it crashes immediately. I don't understand what the problem is, I always delete my cache before entering the game, I've deleted all the thumbnails, nothing else is open when I enter the game, and it still has this issue. Does anyone know what the issue could possibly be?

Could be an older set causing issues. You may have to do a 50/50.

First thing I would do is take out all of your Doors and Windows {one hopes that you have your CC categorized this way} and then test, and then if it doesn't crash start doing a 50/50 on just the Doors and Windows. Or if you don't your CC all categorized then you should do a general 50/50.

If you have SimPE, also try the GUID Scanner. Conflicting GUIDs can cause instacrashing when opening certain sections in the catalog.

I'm curious, I put a new default replacement road in my game, but no matter what it didn't show up. I had deleted the previous defaults first, so I decided it could be the new default not working and conflicting so I took it out of my game, and put the old replacements back, did nothing. Did I already do damage or something I shouldn't have done?

I ran the GUID scanner, now what do I do?