I have a workaround that worked for me regarding this issue and I saw that the locked thread didn't have this solution.
On the "Tips & Tricks" tab, there is a tip on how to solve this. (Being stuck on "preparing to download" and then failing). I tried to follow it. Here are solutions that were specific to me:
- The tip tells you to run some commands into Terminal, I couldn't until I got some things straightened out.
- Yosemite doesn't have wget, so you have to install that separately: http://coolestguidesontheplanet.com/install-and-configure-wget-on-os-x/
- Make sure you install Python.
- When you download the python file from the "wget -O patch_qt5network_wine.py https://bugs.winehq.org/attachment.cgi?id=49988" command, make sure that you modify the file so that the beginning is #!/usr/bin/env python INSTEAD OF #!/usr/bin/python
I was stuck on this for a while. Found the solution here: http://stackoverflow.com/questions/16757349/bad-interpreter-no-such-file-or-directory-in-python - When using the "cd ~/.PATH TO YOUR BOTTLE HERE/drive_c/Program\ Files/Origin/" command, you can just do "cd" and drag and drop the folder into terminal and hit enter.
- Run the last command "~/patch_qt5network_wine.py" and you should be fine.