Can't load my map from steam.

[Hypercube]

I have a custom map I made, I haven't released it, but I wanted to test it through the mod launcher. Specifically for this map, it always gives me an error:

ERR: Could not load mod init configuration file.

Any help? I already looked at the main init file and didn't see anything wrong. I thought I saw this in the troubleshooting guide sometime earlier but I can't find it. It was related to the "steam client must be running to be able to publish" issue I think, but again I can't find it.