@PWORR94 Mods and cc are created by users and EA does not over see the creations of these items. That being said these mods and cc are untested by the EA Sims team. When there is an update there is no way of knowing your existing mods and/or cc are going to work properly. As there is no common control there could be mods/cc in conflict where one or the other may work by themselves but when both are used there are issues. Part of the troubleshooting process would be to remove external game parts to see if that is what is causing the issues before troubleshooting the game itself.
When you have eliminated the impossible, whatever remains, however improbable, must be the truth. Sir Arthur Conan Doyle, stated by Sherlok Holmes