How to stop Acrobat from showing the Click to Proceed button when running an action?

I created a custom action to index pdf files in a folder. For every file the action processes, it displays a Click to Proceed to process the next file, which I have to manually click. This defeats the purpose of creating an action and automating the whole process. 

Is there a way to not show the button and have Acrobat just process all the files without user intervention?