Server 2.2: Caching server not caching content

Question

I configured and turned on the new Caching server, then on the same computer went into Mac App Srore and purchased an app.  I then checked the cache data directory and it is still empty.  Shouldn't it be caching purchases as well as updates? According to the Server app help file, it should.  It also says that no client configuration is needed.
I checked the debug log at /Library/Server/Caching/Logs/Debug.log, and it contains these entries:
2012/12/08 11:57:28:531  Request for configuration from http://suconfig.apple.com/resource/registration/v1/config.plist succeeded
2012/12/08 11:57:28:715  computerModelRules missing from configuration http://suconfig.apple.com/resource/registration/v1/config.plist
Is this normal?  Would it prevent caching?

Answer 1

Well, all the permissions look right.
I have deleted all the directries under Caching and it recreates them with the right permissions.
I've moved the logging level to verbose and run it again and that seems to make no difference.
I have two files in the directory Logs
macpro:Logs XXXXXX$ ls -l
total 16
-rw-r--r--  1 _assetcache  _assetcache  1235 17 Dec 20:56 Debug.log
-rw-r--r--  1 root         _assetcache   929 17 Dec 20:56 LastState.plist
macpro:Logs XXXXXXX$
Debug.Log looks like
and LastState.plist looks like
If I show the directory /Library/Server/Caching I get
macpro:Caching XXXXXX$ sudo ls -lR
Password:
total 0
drwxrwxr-x  3 _assetcache  _assetcache  102 17 Dec 20:56 Config
drwxr-x---  3 _assetcache  _assetcache  102 17 Dec 20:56 Data
drwxr-xr-x  4 _assetcache  _assetcache  136 17 Dec 20:56 Logs
./Config:
total 24
-rw-r--r--  1 _assetcache  _assetcache  10015 17 Dec 20:56 Config.plist
./Data:
total 40
-rw-r-----  1 _assetcache  _assetcache  20480 17 Dec 20:56 AssetInfo.db
./Logs:
total 16
-rw-r--r--  1 _assetcache  _assetcache  1235 17 Dec 20:56 Debug.log
-rw-r--r--  1 root         _assetcache   929 17 Dec 20:56 LastState.plist
plutil -p looks OK (well to me it does)
macpro:Config rwillett$ plutil -p Config.plist
  "ReservedVolumeSpace" => 25000000000
  "LastConfigURL" => "http://suconfig.apple.com/resource/registration/v1/config.plist"
  "SingleMachineMode" => 0
  "Port" => 0
  "SavedCacheSize" => 0
  "LastPort" => 53484
  "Version" => 1
  "CacheLimit" => 0
  "DataPath" => "/Library/Server/Caching/Data"
  "LastConfigData" => <LOTS AND LOTS OF RANDOM DATA REMOVED AS I HAVE NO IDEA WHAT IT IS >
  "ServerGUID" => "882E672A-0172-4A21-84E0-0C1FC08DBC53"
  "ServerRoot" => "/Library/Server"
After all this good stuff, I still have the same error of
2012/12/17 20:56:19:750  Caching server started
2012/12/17 20:56:19:768  Server GUID is 882E672A-0172-4A21-84E0-0C1FC08DBC53
2012/12/17 20:56:19:787  Cache manager initialized, cache limit = unlimited, current cache size = 0 bytes
2012/12/17 20:56:19:787  xpcListener should be running
2012/12/17 20:56:19:788  HTTPServer: Started HTTP server on port 53484
2012/12/17 20:56:19:797  Retrieving configuration
2012/12/17 20:56:19:950  Request for configuration from http://suconfig.apple.com/resource/registration/v1/config.plist succeeded
2012/12/17 20:56:20:027  computerModelRules missing from configuration http://suconfig.apple.com/resource/registration/v1/config.plist
2012/12/17 20:56:20:112  Cleaning cache
2012/12/17 20:56:20:185  Cleanup succeeded.
2012/12/17 20:56:20:185  Registering for notifications
2012/12/17 20:56:20:188  Registering for service
2012/12/17 20:56:21:432  Request for registration from https://lcdn-registration.apple.com/lcdn/register failed: HTTP response 400, body "INVALID_DEVICE"
2012/12/17 20:56:21:436  Registration rejected.
2012/12/17 20:56:21:440  Flushing cache.
2012/12/17 20:56:21:440  Server is suspended.  Will re-register in 3600 seconds.
2012/12/17 20:56:25:055  Server shutting down (15)
I'm surprised I'm the only person having this. It looks as if the system makes a connection to Apple, downloads some stuff and then rejects my registration.
I'm very puzzled.