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Hi Mike, Thanks again for catching this. I've made fixes to both our current release code (3.16) and our development code to check for this situation and give better error messages. We haven't made a new 3.16 release yet as we have some other, unrelated, fixes we want to get in. But one should be out in the next week or two. It turns out that Java on Windows XP does have some problems detecting directories on which the user doesn't have read permission. I don't know many details but I think it is supposed to be fixed in Java 7. But that is really neither here nor there. The fixes mean that if we can detect the lack of read permission the TDS won't even list the unreadable directory. If it can't detect that the directory is not readable, it may try to catalog the directory but it won't throw exceptions and an informative log message will be written. Ethan Ticket Details =================== Ticket ID: ARF-381071 Department: Support THREDDS Priority: Normal Status: Closed