Thanks for sending the problem report. The logs attached to the report indeed gave us more information about the problem.
The problem occurs when textures contained in your SketchUp model are extracted from the model and written to files to allow Shapespark to pick the textures during the SketchUp model import. For one BMP texture the resulting file is corrupted. We are not sure what the cause is, especially that it happens on your computer while it does not happen on ours. One potential reason is that there is a bug inside SketchUp related to extracting textures (do you have the most recent update of the SketchUp 2017?)
The good information is that there is a workaround. If you remove the texture from the material called leaf in your SketchUp model, or if you replace this texture with a JPG version, the export should work. Please take a look at the following screenshot to find out which material is problematic:
Please let us know if it helped.
In the future we will make Shapespark ignore corrupted texture files rather than cause the SketchUp -> Shapespark export to fail.