If you experience a browser error in IE7, along the lines of:
Line:521, Char:4, Error: Type Mismatch Code:0 …
Open up jd.gallery.js, which you can find in the plugin folder /dynamic-gallery/scripts/, find line 520 and replace this:
this.carouselWrapper.elementScroller.scrollTo(scrollPos,0);
with this:
this.carouselWrapper.elementScroller.scrollTo = (scrollPos,0);
This fix will be addressed in the next release of the plugin.