Blender 2.66 fluid hitting non-existent wall

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#1

I am trying to make a picture of pouring wine into a glass (kind of like this tutorial from blendergeru) but the fluid hits a “wall” when it reaches the top of the glass instead of entering the glass. Does anyone know what the problem is? Thanks

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#2

In the fluid settings for the glass, change it from a volume to a shell

#3

Thanks man