Indeed, I've checked the Mod Manager and everything seems to be ticked.
StaticObjects.con is inside a map file ,in this case Port_Bavaria.
Object folder is within bf2142 mod folder, and it contains the StaticObjects.
Now, it may be on my end or I missed something completely.
Inside the original 2142 installation there is an objects folder which contains .zip files, for example I extracted StaticObjects_client.zip into StaticObjects folder.