There's a syntax error in your fetch_params.bat file of the Windows 64 build.
Line 7 "IF NOT EXIST "%APPDATA\BTCAParams" ("
should be"IF NOT EXIST "%APPDATA%\BTCAParams" (
As a result of this, you aleays get an error about cannout find Sapling parameters.
edit - fixing the above still doesn't work, had to manually copy the folder over myself.
Once the QT wallet opens it runs at some stupid resolution which makes it totally unusable. I changed the DPI settings for the QT executable but still can't see the whole wallet. Not sure why you didn't do any testing before this announcement.
Moving on.
Thanks for your feedback, we will doublecheck the bat file, it was working for many other people so we will investigate why not for you.
The QT wallet resolution would be standard with others from other projects, I do not think there is anything unique there. So not sure why you are complaining. Did you try and put the wallet fullscreen? It obviously was not made to do so, we might kill the ability for it to go fullscreen. If you DM any screenshots etc it will help us. We are a work in progress and every version of the wallet will get better. thanks for the feedback.