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I can't get an ambient occlusion bake to work with my file; every time I try to bake, Blender crashes. I'm using cycles render, and my object is pretty low-poly. There might be some weird geometry in it, but the UV unwrap worked alright.

I'm using Blender 2.78 on a MacBook.

I've tried having the image texture node selected, both edit mode and object mode, checking and unchecking "clear", and creating a blank texture image to put the UV onto.

I'm absolutely new to Blender, so please let me know what other info is necessary! Here's the .blend:

settings and view of my working window

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The main reason for the crash is dupliframes (not really expected behaviour though).

The object has Frames enabled in the Properties editor > Object tab > Duplication rollout. It duplicates the object as many times as there are frames set (from 1 to 100), resulting in ~44 000 faces. It isn't visible as object is static.

screenshot-red-line-below-None-point

Also with this the object won't be renderable. Set the option to None and the bake will work.

There are some minor problems though in mesh geometry (non-manifold geometry) which are better to fix. Although they won't crash the bake:

  1. Remove doubles (W > Remove Doubles) and recalculate normals (Ctrl+N) first, this will remove some of the non-manifold geometry.

  2. Edges overlayed on top of the faces (moved with Grab tool below for visualization purposes):

    screennshot-grabbed-bad-geometry

    To avoid UV map corruption delete one edge, then select vertices from the sides and use Connect Vertex Path tool with J to split the face as it kind of was. Repeat for the other edges shown in the screenshot above.

    screnshot-selected-healthy-edge-

    Above selected edge was already made as mentioned.

  3. Internal vertex inside of the mesh.

    screenshot-bad-vertex

    Above faces of the body are hidden to allow seeing through the mesh. Remove that vertex.

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