looking on secretsof.com I can see that you can purchase the upgrade from 2004 to 2010 for $43
so I am presuming you have done this.
If you have your new passwords for embird 2010,
when you download the 2010 trial version it should overight the previous version, then install the correct new passwords you have received from Embird.
do you still have a copy of your 2004 passwords..
perhaps check to insure they are different.
I have windows 7 32 bit.. and I found it much smoother to download the full larger 2010 file.
I had problems with the individual files but since downloading the full larger file mine has run smoothly
Big hugs from London
Maria xx
Email them. They are nice people and will more than likely help you. And I think you explained it well.
Email embird and explain they will have records of your purchase. They probably will reinstate the password to 2010 version. Hugs Sally