You have to run it from CMD.When I open the MCT Tools.exe, it just close. Should happen anything?
Press Windows+R, type 'cmd', hit enter.
Type 'mct --help' and hit enter again.
That's weird, the message should only appear when the -DEBUG parameter is passed to tAPI.exe.I have done some testing as to what causes the crash. So far i have resulted from crashing only from having the .tapi file from MCT being moved/copied into the local folder.
However, i have done a fresh install of Terraria wiping everything from the folder. When the game launches it has a message at the top reading "NO DEBUGGER ATTACHED" to which i am then prompted to install the new version despite my current and my new being the exact same. I have downloaded MCT again after Poro's post but at this moment it still seems that the MCT is failing. If you press "Don't update" you can continue like the normal tAPI but no matter how you try to load the ICM it does not appear in game. So far that is what i have found, sorry there are no error codes that i can share but i will be willing to take screenshots if needed.
Also, the PoroCYon.MCT.tapi file is unused, the installer does not deploy it anymore (I hope).