Cannot connect to Liberation server deleted file error

[SPC (Ret) Kryszewski]

When I connect to the server I get the following message
" You cannot play/edit this mission; it is dependent on downloadable content that has been deleted.JS_JC_FA18 "

I have every dlc except tanks, jets, tac ops, and laws of war, I have uninstalled and properly reinstalled all my mods and the message persist unchanging. Previously before the map update I was able to connect without issues. If someone knows what I need to do to fix this please do inform me.

Another note, is there something special I must do to the liberation file to install it? Currently I just have it click dragged into arma with the rest of my mods, do I need to do something special with that file or did I do that bit properly?

[SSgt (Ret) Strepman]

Have you verified your game cache?

[CW2 (Ret) O'Neill]

This is definitely a mod issue, most likely with the Liberation pack itself since Vanilla Arma and the 506th Modpack don't include F/A-18s. I'd try deleting and re-installing the Liberation mod pack and make sure nothing is deleted by malware protection or simply lost when you unzip the file.

[SPC (Ret) Kryszewski]

Cache is verified, it seems it is indeed the liberation modpack due to one key detail "When you unzip it". I am  individual who uses standard zip files always have so my foolish self didn't realize it was a 7z file requiring a special program to unzip it. So the problem seems to of been me trying to stuff a still zipped file into arma. After downloading the appropriate program to unzip it all is well.