Unable to burn DVD from Windows Explorer after installing ImgBurn

I recently installed ImgBurn on my computer and have been unable to
burn DVDs from Windows Explorer ever since. The ImgBurn works ... it
creates DVDs ... but whenever I attempt to copy files using Explorer
it just doesn't work. CDs are still OK ... just not DVDs. I was able
to do this before the ImgBurn install so I'm assuming that ImgBurn
hijacked my DVD burn capability somehow.

Any ideas where to look? Can I use ImgBurn to do simple backups of
files just like I used to do with Explorer?