This is an advance warning - if anyone here is using WB 3.5a and has sudden problems, you may be experiencing an unforseen expiry condition in this build of WB. Stardock personnel aren't around right now, but when they are, they'll fix it. If you're experiencing problems (eg unskinned windows, rundll warnings), don't panic!
For now just sit tight and maybe unload WB. You can also try turning the clock back, early indications show that this "fixes" it.