Looks like in some cases (at least mine) steam installed the "summer" mod that includes all the dlc to the wrong location. This was causing a crash when trying to start a game including the mod.
[Academagia 3.0.11.0] - [2017-06-25T20:52:10.0857862-07:00] - [Error] - System.IO.FileNotFoundException: Could not find file 'F:\Steam\steamapps\common\Academagia The Making of Mages\Mods\GCC\Content.fa043fbf-3327-49e8-8760-0dd231e81242\20170622.fa043fbf-3327-49e8-8760-0dd231e81242\Content.mdm'.
File name: 'F:\Steam\steamapps\common\Academagia The Making of Mages\Mods\GCC\Content.fa043fbf-3327-49e8-8760-0dd231e81242\20170622.fa043fbf-3327-49e8-8760-0dd231e81242\Content.mdm'
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
the "Content.mdm" file was actually located here:F:\Steam\steamapps\common\Academagia The Making of Mages\Mods\GCC\Content.mdm
I moved it to your expected location and fixed the issue.
