The way to fix that issue is to download the source code on Github. You're going to want the file called "StelliteGUI-win-x64-v0.0.6.zip".

Extract that, then head over to python.org and download and install Python2.7.
After that's done, open up your Windows command prompt or Powershell, navigate to your StelliteGUI directory, and run the command "python -m pip install -r requirements.txt" (installs dependencies). After that completes, run "python wallet.py" and wait for wallet to sync

I just posted part one of my feature on XTL. Check out my article here: https://steemit.com/stellite/@whobiz/stellite-xtl-cryptonight-coin-with-ipfs-and-zeronet-munnypot-1-part-one

Comment there if you still need help! Twitter: @BizMunny