
I got to use the new Firestorm Viewer release 4.6.1-40478 64-bit. My first impressions are:
The download file size is 67.6mb. The 64-bit viewer installs in a separate folder from the 32-bit version. On 64-bit systems you’ll find the 32-bit version installing in: C:\Program Files (x86)\Firestorm-Beta. The 64-bit version installs in: C:\Program Files\Firestorm.
You can run both the 32 and 64 bit versions. I think you should be able to share the cache between 32 and 64 bit versions. But, by default the viewer uses a separate cache for the 64-bit viewer: C:\Users\[Win_Login_ID]\AppData\Local\FirestormOS_x64\ .
It also places the chat logs in their own folder, separate from the 32-bit versions: C:\Users\[Win_Login_ID]\\AppData\Roaming\Firestorm_x64.
The install created a new Firestorm icon for me. I was using the Firestorm Beta, which has a uniquely named icon. So, if you have not been using the beta, it may overwrite the 32-bit icon. So, pay attention to which version you actually start by checking the Firestorm Help→About. Or… the version info is on the splash screen too.

