So here's the error that I am getting after running a fresh install of L4D2 on a Windows Server 2012 r2 box...   
29.0 fps 0/18 on map c1m1_hotel 
#Console initialized. 
#Steam is not active, running in -insecure mode. 
#Loading unsigned module server.dll 
Access to secure servers is disabled. 
#Game.dll loaded for "Left 4 Dead 2" 
Server is hibernating 
ConVarRef test_progression_loop doesn't point to an existing ConVar 
Parent cvar in server.dll not allowed (spit_scaling_min_scale) 
Game supporting (2) split screen players 
maxplayers set to 18 
Unknown command "mat_bloom_scalefactor_scalar" 
NET_GetBindAddresses found 216.135.68.252: 'Intel® 82574L Gigabit Network Conn 
ection #2' 
NET_GetBindAddresses found 10.10.10.252: 'Intel® 82574L Gigabit Network Connec 
tion' 
Network: IP 216.135.68.252, mode MP, dedicated Yes, ports 27045 SV / 0 CL 
---- Host_NewGame ---- 
Host_NewGame on map c1m1_hotel 
Executing dedicated server config file 
CSpeechScriptBridge initializing... 
SCRIPT PERF WARNING --- "main" ran long at 3.027825ms 
HSCRIPT loaded successfully 
SCRIPT PERF WARNING --- "ScriptMode_Init" ran long at 8.355160ms 
Initializing Director's script 
Couldn't find any entities named fire13_timer, which point_template fire13_templ 
ate is specifying. 
Couldn't find any entities named fire13_clip, which point_template fire13_templa 
te is specifying. 
Couldn't find any entities named fire13_smoke, which point_template fire13_templ 
ate is specifying. 
Couldn't find any entities named fire13_fog_volume, which point_template fire13_ 
template is specifying. 
Couldn't find any entities named fire14_timer, which point_template fire14_templ 
ate is specifying. 
Couldn't find any entities named fire14_clip, which point_template fire14_templa 
te is specifying. 
Couldn't find any entities named fire14_smoke, which point_template fire14_templ 
ate is specifying. 
Couldn't find any entities named fire14_fog_volume, which point_template fire14_ 
template is specifying. 
Couldn't find any entities named fire15_timer, which point_template fire15_templ 
ate is specifying. 
Couldn't find any entities named fire15_clip, which point_template fire15_templa 
te is specifying. 
Couldn't find any entities named fire15_smoke, which point_template fire15_templ 
ate is specifying. 
Couldn't find any entities named fire15_fog_volume, which point_template fire15_ 
template is specifying. 
Couldn't find any entities named fire16_timer, which point_template fire16_templ 
ate is specifying. 
Couldn't find any entities named fire16_clip, which point_template fire16_templa 
te is specifying. 
Couldn't find any entities named fire16_smoke, which point_template fire16_templ 
ate is specifying. 
Couldn't find any entities named fire16_fog_volume, which point_template fire16_ 
template is specifying. 
Couldn't find any entities named sound, which point_template fire_ballroom_07-te 
mplate is specifying. 
Couldn't find any entities named fire03-sound, which point_template fire03-templ 
ate is specifying. 
Couldn't find any entities named fire04-sound, which point_template fire04-templ 
ate is specifying. 
Couldn't find any entities named fire10-sound, which point_template fire10-templ 
ate is specifying. 
Couldn't find any entities named fire27-sound, which point_template fire27-templ 
ate is specifying. 
Couldn't find any entities named fire28-sound, which point_template fire28-templ 
ate is specifying. 
Couldn't find any entities named fire_ballroom_02-sound, which point_template fi 
re_ballroom_02-template is specifying. 
Couldn't find any entities named fire_ballroom_01-sound, which point_template fi 
re_ballroom_01-template is specifying. 
Couldn't find any entities named fire_ballroom_03-sound, which point_template fi 
re_ballroom_03-template is specifying. 
Couldn't find any entities named fire_ballroom_04-sound, which point_template fi 
re_ballroom_04-template is specifying. 
Couldn't find any entities named fire_ballroom_05-sound, which point_template fi 
re_ballroom_05-template is specifying. 
Couldn't find any entities named fire_ballroom_06-sound, which point_template fi 
re_ballroom_06-template is specifying. 
Couldn't find any entities named fire_ballroom_07-particles, which point_templat 
e fire_ballroom_07-template is specifying. 
Couldn't find any entities named fire_ballroom_07-point1, which point_template f 
ire_ballroom_07-template is specifying. 
Couldn't find any entities named fire_ballroom_07-point3, which point_template f 
ire_ballroom_07-template is specifying. 
Couldn't find any entities named fire_ballroom_07-point5, which point_template f 
ire_ballroom_07-template is specifying. 
Couldn't find any entities named fire_ballroom_07-point6, which point_template f 
ire_ballroom_07-template is specifying. 
Couldn't find any entities named fire_ballroom_07-hurt, which point_template fir 
e_ballroom_07-template is specifying. 
Couldn't find any entities named fire_ballroom_07-sound, which point_template fi 
re_ballroom_07-template is specifying. 
Couldn't find any entities named fire_ballroom_08-sound, which point_template fi 
re_ballroom_08-template is specifying. 
Couldn't find any entities named fire_ballroom_09-sound, which point_template fi 
re_ballroom_09-template is specifying. 
Couldn't find any entities named fire_ballroom_10-sound, which point_template fi 
re_ballroom_10-template is specifying. 
Couldn't find any entities named fire_ballroom_11-sound, which point_template fi 
re_ballroom_11-template is specifying. 
Couldn't find any entities named inferno02-sound, which point_template inferno02 
-template is specifying. 
prop_door_rotating has Door model (models/props_downtown/metal_door_112_dm03_01. 
mdl) with no door_options! Verify that SKIN is valid, and has a corresponding op 
tions block in the model QC file 
prop_door_rotating has Door model (models/props_downtown/metal_door_112_dm03_01. 
mdl) with no door_options! Verify that SKIN is valid, and has a corresponding op 
tions block in the model QC file 
WARNING: orator at 454 5671 2684 missing modelname 
Attempting to precache model, but model name is NULL 
Commentary: Loading commentary data from maps/c1m1_hotel_commentary.txt. 
SCRIPT PERF WARNING --- "ScriptMode_Init" ran long at 8.603897ms 
Initializing Director's script 
Connection to Steam servers successful. 
VAC secure mode is activated.