Hey there
Stderr = Standard Error = Where every bugs are written.
That data/textures//menu stuff is nothing, don't worry. Everyone has got it.
I suggest you to modify the installation path of Toribash, since they are created & replaced everytime you launch Toribash
Stdout = Standard Out = Toribash screen informations. WWW = Width, HHH = Height
This file will be created everytime you launch Toribash too
About your screen, resize it to 800x600, it should help.
For this, type /re 800 600
For the mods, copy every mods from the Toribash 3.69 folder (if you still have it) in the 3.7 folder.
Good luck