I would click on LOAD before clicking Browse... The Browse... button appears to be for the exporting of the converted .swf file. Also, if you're running Windows 7, I highly recommending to right click on the icon and run as administrator.
I get the same screen, I just clicked OK. Used the load button and got my swf into the utility. When trying to convert got another error screen (something about "dumputil" not being found). Does Adobe test this stuff before putting it out? I am at a dead-end and my boss is looking for an answer tomorrow! This is going to set corporate training direction for awhile, so I was hoping to get this to work. I guess we will set our sights on StoryLine from Articulate (since it has HTML5 built-in).
Any help would be HUGE!!