Trying to export animation as PNG sequence with alpha channel, but having a hard time finding a solution in SU.

Tried the Export 2D with Alpha plugin, but it only does a single 2D image:
http://sketchucation.com/forums/viewtopic.php?f=323&t=30819

I see the online manual says that the mac version supports it:
http://help.sketchup.com/en/article/114336

Is there any way to do it with the Windows version at this point?

I know I can export with a solid background and key it out in After Effects, but being able to export animation directly from SU with a transparent background would save a lot of time and resources.

Thanks!