Alright, so on a whim I just tried redownloading the zip for WooHooer and installing that without any modules. Deleted the scriptCache as well.
It works fine! Ugh... I'm going to do some more testing with redownloading and installing the modules one at a time, but so far, it looks like the file itself broke at some point...?

Besides the add-on Eiffel Tower, which requires Icarus's Eiffel Tower Rebooted over at MTS and the Toilet Stall, all other modules requires Premium Content to be installed. So perhaps your game choked on that?

It is possible. I didn't realize that they had those requirements. I have the Sauna in there at the moment, so I will probably take that one out. However, it seems to be working now even with it there.

Soooo... Yeah, if anyone else is having this weird, unexplained issue, I guess just try redownloading and make usre to delete the scriptCache...? Sort of wish I'd tried that earlier instead of making you wrack your brain, but I just didn't think about that possibility. Some CIS major I am. lol

Anywho, thanks a lot! I guess I did learn about the scriptCache thing, so it wasn't a total waste of everyone's time!

Glad you got it sorted. If you have any other issues or just questions, you are free to ask them on our board. Happy Simming!