- Edited
The mod.txt error is caused when there's a folder inside your Cosmoteer\Mods folder that doesn't contain a mod.txt. Often when unzipping/installing a mod.zip file, the mod.txt will be placed in a folder inside another folder inside Mods due to the nature of zip files.
e.g; ABH_Bounties.zip's mod.txt might extract to Cosmoteer\Mods\ABH_Bounties\ABH_Bounties\mod.txt
In which case you need to cut out the second ABH_Bounties folder and then paste it in \Mods. The other one should disappear on its own.
That aside, however, it does seem like the newer updates have broken the mod itself. I'll release a bugfix update to fix all compatibility issues at some point.