Photoshop :: CS4 / Setting Layer Style In Actions?

I'm using PS CS4 and I've been using actions for years now.  However, about a year or two ago they started acting oddly.  All my custom actions follow a similar flow: open file, size file, make transparent, add layer style, export to PNG, and, finally, close the file.
 
Once upon a time, the last time I recall it working flawlessly was in CS 2, I had to do nothing other than start the action on a directory of files.  Now I have to click OK when the Layer Styles window pops up.  Here is the exported action file.  After clicking on a directory that may contain up to a 1,000 files; it gets tiresome and finger sore.