I have the same issue, in my case I've determined that the lookup fails whenever Adobe Creative Suite 6 is installed. I don't have a final solution yet, (I set up a case with Apple on Friday but won't be back in the office until Tuesday to follow up), but uninstalling CS6 allows the application list to build normally. Of course, I can't roll out Profile Manager until I can add CS6 to the approved application list but at least I can set up all of the other application-related options while I wait.
To see if you're situation is the same as mine, here's what happens when I open the Application list and get the "A Server Error has Occurred" message.
The following events are logged:
- ReportCrash: DebugSymbols was unable to start a spotlight query: spotlight is not responding or disabled.
- ReportCrash: failed looking up LS service ( scCreateSystemService returned MACH_PORT_NULL, called from 3) SetupCoreApplicationServicesCommunicationPort, so using client-side NULL calls.
- ReportCrash: LaunchServices/5123589: Unable to lookup coreservices session port for session 0x186a0 uid=0 euid=0
- ReportCrash: Saved crash report for ruby version 83.4 to /Library/Logs/Diagnosticreports/ruby_2012-10-17-124804_SERVERNAME.crash
Events #2 & #3 are logged multiple times before Ruby finally crashes.
Below is the start of the crash report:
Process: ruby 
Code Type: X86-64 (Native)
Parent Process: ruby 
User ID: 220
PlugIn Path: /Applications/Server.app/Contents/ServerRoot/usr/share/devicemgr/backend/lib/Sy stemApplicationExtension.bundle
PlugIn Identifier: SystemApplicationExtension.bundle
PlugIn Version: ??? (820.10)
Date/Time: 2012-10-17 12:48:04.422 -0400
OS Version: Mac OS X 10.8.2 (12C60)
Report Version: 10
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
__TEXT 000000010d1fd000-000000010d1fe000 [ 4K] r-x/rwx SM=COW /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
Application Specific Information:
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
...[thread details removed]...
I'll post the solution once I have it.
If you haven't already, try the solutions in this thread. The official response to my case was that it's Adobe's problem not Apple's - if you're having the same issue with no Adobe software please let Apple know and open a new case if you can.