Slade .INI?

Hello, simple question, but where is Slade config file? for a long time now, everytime i try to play-test my mod with Slade 3 when i open it, it tries to launch a on directory that does not exist on my computer. for months now. I've looked on the configuration, and i can't seem to change the play-testing directory. My only option that i see is deletting the .ini (or whatever file format Slade 3 uses) to reset it.
Thanks in advance!

%APPDATA%\SLADE3

Enter that in your file explorer bar and it should bring you to the proper directory (which will be something like C:\Users\<Username>\AppData\Roaming\SLADE3).

Thank you Gez!!