When printing a Lync Online Meeting from Outlook 2010, it prints out xml code?

I have a couple of users that whenever they go to print out Lync 2010 Online Meetings from outlook 2010, it prints off a bunch of xml code and extra info (UCCCapabilities, UCInband, UCMeetingSetting, UCMeetingSent) all in XML.

Any ideas why it would be doing this, and only affecting a couple of users?

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