Hello

I cannot get any new map mod to load into the game. Should be seemless.

When I click the autogenerate button on the publish mod popup, nothing happens.
The mod uploads and appears in my mod list when I subscribe but does not appear in the map selection window of the game.

Ideas?

Is your mod/map present in the folder?
The error shows that it isn't (prebuild or classes files for trucks)

It sure is.

I tried to publish a completely new level on another computer and I have the same problem. This time when I click on publish, the 'Add truck, addon, or terrain to auto-generate preview for the mod!' pops up.

All the levels I have tried to upload on both computers are all at zero bytes in the workshop!?

EDIT!!!!!!
HAHAHAHAHAHA FACEPALM!!!!

So i had removed "level_" from the filename.

walks away in shame

@Leenuks
No shame for an honest mistake, bro. We've all been there and done that.
Glad to see you figured it out!