Thanks for the help. It turns out the model wasn't completely solid. Like you said, I had walls within the structure that needed to be removed.
There's a great plugin for Sketchup called Solid Inspector (https://extensions.sketchup.com/en/content/solid-inspector) that really helped me identify where the model wasn't considered closed. An import into netfabb to scale the model and I was set to print.
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gr5 2,295
First and foremost - never print anything without looking at it in slice view first. This would have shown what it was going to print.
Now to fix the problem. I don't understand what the problem is in you specific case but sketchup lets you put walls anywhere so you can get internal walls inside a solid (which confuses cura) and you can get holes in your objects (also confuses cura). Other cad programs like solidworks or DSM - or openSCAD - well this is impossible. They model solids - not faces. So it's impossible to get this. Anyway Cura has an XRAY mode in the gui. Click that icon and if you see any red there is a problem in your model.
Also there are features in advanced called "fix horrible". If your model has no red in xray mode try unchecking all 4 of these. Otherwise you can sometimes fix the print by fooling with these checkboxes (instead of fixing it in sketchup).
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