I have tried everything to get my XML file to work. I get the following message no matter what I do - combine meshes, don't combine meshes, export my SketchUp file as one, export my SketchUp file as separate pieces - see message below:

You are missing the asset called "OuterShell.fbx". Please ensure you have imported all of the FBX assets for this level from "D:/Users/cathb/Documents/LA0676/LA0676.InteriorsLayout1/" into the Content Browser directory "Contents/PlayUp/" before placing them in your level. For help, visit PlayUpTools.com.

I have no idea what is going on and I'm confused. I need to figure this out quickly since I would like to get a proof of concept finished before the end of the week.

Currently trying to export to Unreal Engine and I'm following all the settings that PlayUp recommends and while ti worked yesterday it's now exporting dae files while also stating that it's making an fbx file. What on earth is going on?

I'm trying figure out how to work out how the program needs to work with the others that I use - Photoshop, Unreal, et al. If I can't in the next 28 days, then I'm going to have to look elsewhere out of sheer necessity - something I don't want to do when there is program apparently very able of doing this and saving me from the insanity that is the conversion from SketchUp to Unreal.

I use Win 10 64.
I both installed VC++ Redistributable (x86) and (x64) in order to making TextureConverter.exe working...even if, I have an error message in the bach cmd window :
TextureConverter.exe: UnableToOpenConfigureFile `magic.xml' @ warning/configure.c/GetConfigureOptions/708.

Then, but I have 3 issues :
Issue 1 : Created .dae (and then also.fbx if created) files refer to a bad path for textures

Issue 2 : the value of the path may vary according the PlayUp preferences defined in Skechup

Example1 :
PlayUp preferences (for Unity) with "Asset Path" and "Custom Export Path" set to 2 different values :
in .dae file, the first "Materials/" folder name is missing ?
<init_from>Textures/Brick_Colored_Blue.tga</init_from>
instead of <init_from>Materials/Textures/Brick_Colored_Blue.tga</init_from>

Example 2 :
PlayUp preferences (for Unity) with "Asset Path" and "Custom Export Path" set to the same value = a valid Unity Asset folder):
Then, in .dae file, a "Object" folder is added in extra... nut not needed, in the path :
in dae :
Objects/Materials/Textures/playup_nomaterial.tga</init_from>

in fbx, then :
Property: "Path", "KString", "", "D:\JG\Data\Unity\PlayUp\Assets\Objects\Objects\Materials\Textures\Metal_Corrogated_Shiny.tga"

Issue 3 :
If the texture file as a blank(space), then .dae or .fbx will also refer to a bad file name :
Example : if texture file is "nice texture.tga"
Then the texture filename will be troncated to "nice" in the .dae or fbx files...

1. Create TWO new materials. Use color sliders to assign the color red to one, blue to the other. Name each material after the color. Assign the same texture image (I used the SketchUV default texture "texture_grid.png") to each. Tick the "colorize" box.
http://i.imgur.com/XaxDTel.png

2. Apply each material a box using triple click to apply to all surfaces.
http://i.imgur.com/2W0ddEY.png

3. Export model to Unity using PlayUp tools 21.0
http://i.imgur.com/9cY6Bx9.png

4. Unity materials folder contains one material named "texture_grid" colored blue. The red material has not been exported because PlayUp tries to name both of them after the texture file ("texture_grid"), instead of the material name ("Blue" and "Red" in this case), and there is a name collision. http://i.imgur.com/JPFKEFl.png

5. Unity texture folder contains a colorized blue textured version of "texture_grid.png" named "texture_grid.tga", but no read texture for the same reason as 5 above. http://i.imgur.com/VS1CTnA.png

6. Solution: PlayUp texture exporter should name colorized textures and materials after the unique Sketchup Material name, not the Texture Image.

When exporting a grouped objects from sketchup playup, an fbx is generated. if we do not select "Combining Meshes" while importing the fbx into Unreal, the import will result in multiple small objects with different names, like Kitchen_mesh10, Kitchen_mesh11, Kitchen_mesh12.......etc. The xml file will not work because it will show an error saying "You are missing the asset called Kitchen_mesh.fbx. Please ensure that you have imported all of the fbx assets......."
However it works fine when "Combining Meshes", because it only generates a single Kitchen_mesh.fbx. But the whole point is we want to split the fbx into multiple pieces for easier texturing.