PSCS3 help?

I have PSCS3 and lately, whenever I open it up, everything has been set back to default and all my modifications to the workspace have just disappeared. Every single time (for the last week, anyway) I open it up I get this page, whereas normally it looks more like this (aside from the bar to the far right - I can't manage to get rid of that pesky thing). Can someone clue me in on a) what's causing this and b) how to fix it so it doesn't do this every damn time I open the program?

Any and all help is extremely appreciated. :]

(I looked through the memories and recent entries for similar issues but couldn't find anything. Apologies if I managed to overlook it.)