Jen,
I have downloaded your file and run expandXar on it.
Unfortunately it chokes on something in the file and gives an error (this is not a problem with my running of ExpandXar, it's the problem with the file itself)
The (incomplete) result has only one 'trick or treat' image in it, which I doubt is much use to you.
Xara staff are often able to fix these files enough to load more completely (I'm sure they have much more powerful tools for analysing files), so if no-one comes along here to help, you should probably try the official support channels - I've no idea how responsive they are.
For reference, though I don't think it's useful to anyone, the output from ExpandXar I get is this:
C:\temp>expandxar circlesfordisplay.xar out.xar
DoImport failed
Fixing tree depth (9)
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