Server Error uploading to gallery/library

Being a long time Sim fanatic, I've been with the Sims ever since the very first release ..... WAY back. I am nearing my wits end with the issues in uploading lots to the gallery. I tried everything players and help articles recommend. I got it to upload 2 lots by deleting the "localthumbnail.cache" folder but now it's back to giving me a "server error" message and won't even let me save to my personal library now. I really don't want to have to uninstall and reinstall the game again. If that's the only option then I think i'm just gonna walk away. The last 3 "upgrades/updates" i've had to do this and ended up losing everything i had saved because the past buildings were considered "corrupted". I don't use MOD's so there is no custom content. I do occasionally use the "showhiddenobjects" cheat but that's all.