That sucks so hard. I bought the upgrade without trying the serial. SUCKS!
Geez, don't get mad at the RW folks for doing something nice...
Guess it pays to actually read the large, bold print on their website
RapidWeaver 4 is a free upgrade for all registered 3.6 users!
It goes on to say, "If you own RapidWeaver 3.6.x then version 4 is a free upgrade. You won't need to re-enter your serial, you can simply download version 4 and get weaving right away."
You've just read my signature