So I decided to play Sims 3 for the first time in a long time today. My sims won't do certain things: play chess, play guitar, gussy up (i'm sure there's a lot more but I haven't fully explored this problem) Naturally, if they cannot do these things, they cannot gain skills. eg: My sim will pick up the guitar to play it, but it disappears into her inventory. In subsequent attempts, she pulls it out, then puts it back in her inventory.
Can anyone tell me what's going on here, and how I can fix it?