Hello,
damn, the NoMod launch option has made the game crash since a recent update !

I fixed that for the next update, thanks to your report !
Meanwhile, in Windows explorer, go there : %APPDATA%/../LocalLow/Mana Games/Tennis Elbow 4
Then edit Tennis.ini and change this line, under [Game], from :
Profile = XKT
to :
Profile = Default
If you want to remove everything and start clean, delete these 2 folders :
- %APPDATA%/../LocalLow/Mana Games/Tennis Elbow 4
- C:\Users\Public\mod.io