[Can't select file?]

I have just downloaded Imgburn.

 

I started it up and it found my two DVD drives.

 

I wanted to burn an iso file to a dvd and went to selct file, browse, found the file and clicked on it but it doesn't appear in the imagburn screen. It won't select any file?

 

Anyone any idea why?

 

I'm trying to burn Hiren's bootable dvd

 

Thanks Tony

 

Update. For some reason the Hiren's iso file wasn't picking up so I downloaded it again and it's OK now.