Hmm, does the same for me on Firefox on Win7. While I expect that a “save file as” would get the file (it appears to be displaying the fzpz file instead of downloading it), I happen to have a copy of the fzpz here so uploading it here is easier:
YwRobot_Breadboard_Power_Supply_v5.fzpz (87.4 KB)
clicking on this should do a correct download of the file.
Peter