Problems exporting to .fbx

Hey guys – not sure if this is the most appropriate spot to post this question.

I’m having problems exporting a model I made to .fbx… It seemed to work fine before I textured the thing, but now I’m getting this error message:

So, it probably has something to do with how I textured it. It currently has 6 texture channels, one for each jpeg I’m using. I selected and unwrapped the various parts of the object while following this tutorial:

I’m trying to use the object in Unreal Engine 4, which is why the model is so huge in Blender – but scaling it down doesn’t seem to fix the problem. Right now the object’s scale is 1, 1, 1, (setting it to 0 just makes the object disappear, right?) its Rotation is 0, 0, 0… I’m sort of at a loss.

Thanks for any help you guys can give me!

First thing try using the current version of blend er rather than an old one.

What export settings are you using
Please supply a demo blend file (including textures) that shows the same error