[Plugin:NextGen Gallery]- adding captions to slideshow view

Hi,

I am using the NextGen image gallery and I have switched to the slideshow view as the default. I want to add captions to the images. I set up my short code as follows.

[nggallery id=15 template=caption]

I added the caption and it shows up fine in the thumbnail view, but doesn’t appear in the slideshow view. Any way to add captions to a slideshow?