Something appears to have gone wrong with the easels on all my lots. Sims don't appear to be able to finish a painting, although their skill level does improve. Instead of the picture gradually appearing on the canvas, as it should, it appears complete - although when I shift the camera, or zoom in, it flashes on and off. Eventually the sim does stop painting and just stands there looking at it. There is no message to say they have completed the painting, nor any menu option to sell or take it. I've tried deleting the easels but that doesn't work. Anybody got any suggestions?

Try removing your custom content following this guide .

I tried it without CC but its still happening. I was wrong about them not finishing the paintings, they do eventually but they take a long time. But it is the flashing that is annoying, it rather spoils the fun of trying to guess what the painting is going to be. Since I am now using a new computer I think it may be a graphics problem.