NextGen Gallery sizing problem in IE

I’m having problems with how the slideshow presents sizing in the NextGen Gallery. When the page first loads, the sizing is just fine, but if I refresh the page, the size shrinks to about 50% of actual size.

Other browsers don’t do this. Under ‘Options’ I’ve chosen ‘false’ for Image Stretch. All the other options display the proper size, but shift the slideshow outside of its proper position… Any ideas?

http://african-prestige.com