On second thought, had the same error pop up again. Sometimes it will get stuck at "DW_AUTHORIZING" after the fact, but other times it will spam the console as shown in the OP.
Sending heartbeat...
Heartbeat successful.
AI (entity 599, origin 1898.7 -2161.7 307.5) couldn't find pa
th to goal.
AI (entity 589, origin 1143.3 -1457.7 271.9) couldn't find pa
th to goal.
AI (entity 599, origin 1868.8 -2123.3 307.2) couldn't find pa
th to goal.
AI (entity 589, origin 1315.8 -1630.3 273.0) couldn't find pa
th to goal.
AI (entity 589, origin 1380.9 -1700.0 273.5) couldn't find pa
th to goal.
AI (entity 589, origin 1472.4 -1785.0 305.9) couldn't find pa
th to goal.
Sending heartbeat...
Heartbeat successful.
AI (entity 654, origin 1143.7 -1831.4 279.4) couldn't find pa
th to goal.
Sending heartbeat...
Failed to retrieve session update status
EXE_ERROR_MODIFYING_SESSION
EXE_ERROR_MODIFYING_SESSION
Heartbeat successful.
Sending heartbeat...
Failed to retrieve session update status
EXE_ERROR_MODIFYING_SESSION
EXE_ERROR_MODIFYING_SESSION
Heartbeat successful.
Lost connection to lobby server.
Cmd_AddCommand: getpeopleonserver already defined
Calling Party_StopParty() on lobby
Clearing party member 0's party info for gameSession
Clearing party member 1's party info for gameSession
Clearing party member 2's party info for gameSession
Clearing party member 3's party info for gameSession
Failed to retrieve session update status
EXE_ERROR_MODIFYING_SESSION
EXE_ERROR_MODIFYING_SESSION
calling XNetQosListen( DISABLE ) for session 'gameSession'
Clearing migration data
Calling Party_StopParty() on party
Clearing migration data
====================================================
Com_ERROR: EXE_DEMONWARE_DISCONNECT
====================================================
ERROR: No languages available because no localized assets wer
e found
********************
ERROR: The Call of Duty: Black Ops server is not available at this time. Please
try again later or visit http://www.callofduty.com/blackops/status for updates.
********************
----- Server Shutdown -----
0:RunnerFaith EXE_DISCONNECTED
1:Cake100 EXE_DISCONNECTED
2:viniciusff EXE_DISCONNECTED
3:nenejojo EXE_DISCONNECTED
PMem_Free( PerLocalClient, Low )
PMem_Free( PerLocalClient, High )
---------------------------
Expression Error (ui/error.menu:56): Invalid functionmade it
into the stack!
Expression Error (ui/error.menu:56): Invalid functionmade it
into the stack!
Expression Error (ui/error.menu:56): You cannot ! a 'String'
(ui_multiplayer)
Expression Error (ui/error.menu:56): Invalid operation - mis
sing parameter inside function or parenthesis
Expression Error (ui/error.menu:56): stray operands in expres
sion
Expression Error (ui/error.menu:61): Invalid functionmade it
into the stack!
Expression Error (runtime:0): Invalid functionmade it into th
e stack!
Expression Error (runtime:0): Invalid functionmade it into th
e stack!
Expression Error (ui/error.menu:67): Invalid functionmade it
into the stack!
Expression Error (ui/error.menu:67): Invalid functionmade it
into the stack!
Expression Error (ui/error.menu:67): You cannot ! a 'String'
(ui_multiplayer)
popup_connecting_dw
DW_DNS_RESOLVING
popup_dw_dns_lookup
DW_REQUESTED_STEAM_TICKET
popup_dw_dns_lookup
[STEAM] 1 calls ready, running...
[STEAM] running call 2
DW_AUTHORIZING
Sending heartbeat...
Sending heartbeat...