I have the upgrade on my site:
v1.2.
I've heard that some people were having problems installing it because it needed to be "authenticated" with the E-Stamp servers which are down permanently. Please let us know if you've successfully installed it after Jan. 7th. As for me, I just downloaded it but I haven't had a chance to try it because I'm at work now.
Here is another link to a discussion about the e-stamp thing:
other discussion
Here's what someone said: "Before you upgrade your Estamp software, save its MSMAIN.INI file because it contains your postal certificate. Sometimes the upgrade process writes a new MSMAIN.INI file without this certificate, making your Electronic Vault useless, and because support has been withdrawn (before the advertised date), you won't be able to reinitialize it. But you can copy the certificate from the old MSMAIN.INI file and paste it into the new file."
What I might end up doing instead of upgrading, is just printing "additional postage" (found in a pull-down menu on the right side of E-stamp window). If you print the correct amount (i.e. $.34), I can't see why USPS wouldn't deliver it.