Change the download page that dishonestly says that "Your Program is Now Downloading."
Instead tell people the truth. How about saying, "A separate window will open and ask you if you want to save the file. Click "Save File" and the file will be downloaded and saved to your computer. After it has been saved to your computer, please click on the file to open and then install on your computer."
Thanks for your feedback. We'll keep up to improve it.