Convinced this plugin is becoming abandonware. Would consider donating or paying if this were an active project. Regardless, it seems that breakages and complaints about lack of basic functionality (categories!) have gone unaddressed without sufficient explanation. I would steer clear.
Edit: Frank has fixed some items more recently. Plugin still isn't what I would consider feature-rich; discouraging in light of the fact that some pro Genesis themes are reliant on a testimonial slider with limited capabilities, but that would have to do more with those theme creators than this plugin.