Is there a sig7.bin in the WindowBlinds directory? Given it was an update, it should already be activated. Right-click in Impulse on it and say Reactivate?
Even I no longer have my SW- OD serial active. I do wonder if something is happening there. I will check back on Saturday, but you can email kwilas at stardock and I can look more privately over the weekend as need be.
Kris