On 1 of 3 user's computers one xref does not load automatically. The xref manager says the xref is "unresolved". On the other two computers it works fine. Is there some obscure variable or something within the file that would prevent it from being loaded? I don't think there is. That would be pretty stupid, even for Autodesk.
The drawing has been purged & audited and cleaned as much as possible.
Anyone have any ideas?