Having very similar problems. Also see this thread:
ZCS NE 5.0.1 Blackberry support
My BB log looks like this:
[30054] (02/25 11:34:17.968):{0xB90} Starting Message System
[30055] (02/25 11:34:17.968):{0xB90} Using MAPI profile BlackBerryServer
[30036] (02/25 11:34:18.000):{0xB90} MailboxManager::SubsystemInitialize - OpenProfileSection[Global] (0x8004010f)
[40206] (02/25 11:34:18.000):{0xB90} MailboxManager::SubsystemInitialize - Using MAPI profile 'BlackBerryServer'
[50000] (02/25 11:34:18.093):{0x1294} Controller: This BES Agent is under control of BlackBerry Agent Controller
[20137] (02/25 11:34:18.109):{0xB90} MailboxManager::SubsystemInitialize - g_pSession->OpenMsgStore (0x8004011d)
[30036] (02/25 11:34:18.109):{0xB90} MailboxManager::SubsystemInitialize - OpenProfileSection[Global] (0x8004010f)
[40206] (02/25 11:34:18.109):{0xB90} MailboxManager::SubsystemInitialize - Using MAPI profile 'BlackBerryServer'
[20137] (02/25 11:34:18.125):{0xB90} MailboxManager::SubsystemInitialize - g_pSession->OpenMsgStore (0x8004011d)
[10277] (02/25 11:34:18.125):{0xB90} BlackBerry Messaging Agent MLA-BES Agent 1 failed to start. Error code 5305
[50106] (02/25 11:34:18.125):{0xB90} Stopping BlackBerry Mailbox Agent 1 for Server MLA-BES
[40507] (02/25 11:34:19.093):{0x1294} ExtUDPLogThread: Code on closing = 0
[30000] (02/25 11:34:19.093):{0x1294} [DIAG] EVENT=Unregister_thread, THREADID=0x1294, THREADNAME="ExtUDPLogThread"
[30065] (02/25 11:34:19.093):{0xB90} BlackBerry Mailbox Agent 1 for Server MLA-BES shutdown complete
Aside from this I'm also getting some warnings in my Windows app log, like:
{StartNotifyThreadServer}: DBNS component not installed.
and
The description for Event ID ( 45058 ) in Source ( DevMgmtConnector ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: {StartNotifyThreadServer}: DBNS component not installed..