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It sounds like you need the snapshots feature. It is one of the tabs on the left side. Note, that you need at least Boxshot Professional in order to use that.

You can still do this with loft objects, yet it might take some efforts. The two key things are:

1. Add more slices. You have just three and that's not enough for smooth interpolation of such shape;

2. Edit front and left sides separately. You can enable this using the popup menu as displayed below.

The smoother surface you need, the more slices you need to add. Make sure you switch to "Scale on visible axis" and then switch between front and left sides to configure the shape. Another important thing is to make one or two top slices slightly smaller on the "Left" view to avoid "horns" at the top:

Hope this helps.

The wine bottle is most likely the Lathe shape, is that correct? With lathe you need to manually configure materials in the editor. Open the editor, locate the label element on the outline and change its material to match the bottle's one:

You might also want to disable the "double-sided" option which is to the right of the material selection drop-down.

This depends on the shape you use. What is the shape?

Since version 5 Boxshot tries to be physically correct in rendering and so does not support features like that. In version 4 we never had "receive shadows" option for materials, but had "cast shadows" as a property of omni lights. In version 5 lighting is done the same way it happens in the real world, so we can't just switch shadows on and off.

The question is: why do you need such a "shadow receiving" object first of all? Could you provide a scenario or a scene where it is needed? Maybe there is another way to do the same?

Renaming the crease line currently rebuilds the whole shape, so it might take some time for the complex shapes. We're going to address both this and folding speed in the next updates.

Multiple selection is also planned.

Try using the latest beta version of Origami that shows more details about the dieline problems:

Impossible shape means that once Origami finished folding the dieline, it can't match the edges in 3D space even if they are connected in 2D space. This could easily happen if the folding angles are wrong or not specified. I believe if you double-check the folding angles next to the highlighted edges, you'll find the difference with the real paper shape you cut.