It looks like everything is in order, marcs, so I'm personally at a loss as to why this could be happening to you. There are two things you might try though: if you right-click on the "Synchronize with server" button on the very bottom right of your 2nd screenshot, a context menu appears with the options to "rebuild all" and to "register again". One of these may get you up and running.
You might also check the erotic levels filters I've circled in the attached screenshot to make sure that they're all checked. Also of note is a transparency slider on this tab, but I doubt that that could be set to anything other than 0% unless you personally changed it. Oh, and make sure "Set topmost" under the display priority is checked. It's possible that the dancer is hiding behind other windows, maybe?
Hopefully, somebody else will have a better idea than I do about why this is happening to you. Good luck.