As an existing Elements 5 user I have recently discovered the DNG converter. This is great because I use a Nikon D80 and my preferred format is.NEF. However every time I select a source folder in DNG converter the programme gets 'stuck' on that source. For some reason however many times I close and re-open the application it will only let me select the folder that it was used to convert first time out. Any ideas?
Have you tried just dragging a folder onto the DNG converter icon? I don't know what OS you are using. But in Windows that works for me.
I'll give it a try.