POSSIBLE SOLUTION (don't shoot the messenger) - But I had an issue downloading from Google Drive. I would click to download, it scans for virus, and then nothing...no download started. But then I stumbled on this. I right click the item I want to download and click to "get link", then copy and paste the url. Finally, on this screen you will see the download icon in the top right. Click it and it should prompt you to save the file in your selected file location. File has been downloaded, crisis adverted, smokes blunt and gets back to life.
Hope it helps any lost soul searching for this answer from a question asked, at the moment, 4 years ago. If you see this in the future, people are currently wearing masks, all confused on everything.