I have purchased Windows Blinds many years ago and have been able to update it no problem with the activation key given to me, when there was an update last October I downloaded it within the "Impulse" download manager and re-activated it with the same key I've always had.  I now understand that there is an update to WindowsBlinds 7.4 and when I try to activate it with the Key I was supplied with, it tells me that the serial number is already registered to another account???

Now I might be a bit thick here (which isn't unusual) but do I need to purchase a new version of  WB7.4 or is there a problem with the activation key stopping me from updating to WB7.4?  Help please.

Many Thanks