I'd have to say I am unsure about your problem, as far as I know they haven't updated the compendium lately. I know some people using windows 7 have to run HL in Administrator mode to get the downloader working which has been mentioned in other threads. You might want to try that. I also know the downloader should be getting an update again this month. I checked the D&DI content calendar and it doesn't show any changes to compendium.
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