I'm from Korea and I've tried it on 3 different PCs (desktop, laptop, UMPC) and still can't save it.
Please check the video below:
Currently, the software does not support translucency. So, if you need the shadow, finally process it in the image processing software. For example, Photoshop. Change the shadow to semi transparent. Remove the shadow component if it is not needed. I usually end up dealing with shadows. In Photoshop.