Failed to load plugin error

[BlankSky21]

The error in the console is saying:

[SM] Failed to load plugin "LMCL4D1CDeathHandler.smx": Plugin only supports Left 4 Dead.
[SM] Failed to load plugin "LMCL4D1SetTransmit.smx": Plugin only supports Left 4 Dead.
[SM] Failed to load plugin "LMC_L4D1_Menu_Choosing.smx": Plugin only supports Left 4 Dead.
[SM] Failed to load plugin "LMC_L4D1_RandomSpawns.smx": Plugin only supports Left 4 Dead.

I've used this plugin on my server before, could it be because I'm using SourceMod 1.11 or because of the new left 4 dead 2 update?

[LuxLuma]

That error is because you are trying to load modules that are for Left 4 Dead.
Plugin only supports Left 4 Dead.

If you are running LMC with all of it's modules on Left 4 Dead 2 remove the L4D1 variants.