I am able to open the launcher (most of the time), but when I hit play the screen simply goes black and stays that way, as if it's about to start but it never does, no matter how long I wait. The default cursor doesn't even change to the usual larger sims-blue cursor. And when I try to install new custom content, the installer window opens but also remains black and doesn't load.
The only recent changes I've made since it last worked is install World Adventures and fixed my custom content packages folders to be in the right place. Is this due to an overload, maybe? Or perhaps due to me playing from an external hard drive? I haven't had issues with it in the past (aside from having to keep graphics very low), though I've heard it's really not recommended.
Any questions about equipment/software or suggestions involving technical faffing about will need to be explained in layman's terms, please and thank you. Seriously, I'll have no idea what you're talking about or how to find what you're talking about otherwise.