It sounds to me as though something is not actually being done the same between what is done manually and what the bot does. I would think that clicking the save button isn't the issue but that whatever action generated the save window to popup is different.
Have you tested it in debug mode where you switch around the actions that are done manually? For example, if you're clicking a link or button in the webpage, first try manually clicking the button to bring up the Save As popup. Then in Blue Prism attach to the popup/browser and perform just the one step required for the bot to click the Save button.
If it fails still, try doing a global mouse click (if you're not already) and try the same test again. If it still doesn't work, do the same test again but try having the bot send keys ALT+S to save. If it still doesn't work, I've no idea and I'll join the at-the-end-of-my-guesses club with Tetsuji.
I feel like one of those will work though. So, crossing my fingers that it does. You'd be able to narrow down that it's something about how you're generating the save as popup or how you're filling in the save location. The next thing I'd try is to have the bot cause the Save As popup to occur, and then I'd manually put in the save location and click save. This could be very telling if the download doesn't work for you manually at this point. That would mean the bot is not actually clicking the same thing you are so some experimentation would be appropriate.
I don't normally like to give suggestions that I have no idea will or will not work, but it sounds like that's pretty frustrating for you and that you'll want any suggestions you can get.
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Dave Morris
3Ci @ Southern Company
Atlanta, GA
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Dave Morris, 3Ci at Southern Company