Mission Log Files. Where Are They?

Building some missions and running into issues now n then where the mission won't load...no error on screen. Can someone point me to the log files?

will your stock tarawa map still load or is it just the mission one that wont load?

will your stock tarawa map still load or is it just the mission one that wont load?

map loads fine. Mission won't load. I have one mission in Tarawa already which works fine. It's something in the mission that it doesn't like...I need to find the log file to figure it out.