Here's kind of a wacky issue we've seen a couple times so I thought I'd give you a heads up just in case you run into it.  If you're trying to run the MDM Management console on the same box as the MDM Reporting console and seeing things disappear then this may be your issue:

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Issue: The System Center Mobile Device Manager (MDM) management console is no longer available after installing the MDM Reporting Services v1.1 reporting snap-in.  This only occurs on the system on which the MDM Reporting MMC was installed.  Other MDM workstations that have installed the management console are unaffected.

Cause: This is caused because the MDM v1.1 Reporting snap-in is registered into the MMC catalog with the same name as the main management console. 

Resolution: Until the complete fix for this problem has been made available, the MDM Reporting Services snap-in and the MDM Management Console snap-in cannot both function if installed on the same machine.  To restore the MDM Management Console, run the SCMDM setup and re-install just the MDM Management Console.

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Once an update for this becomes available an announcement should show up here on this blog or as part of a 'new KB' post.  Stay tuned...

J.C. Hornbeck | Manageability Knowledge Engineer