I allow Capture One 7 to output to the default location, C: user==user name==my pictures==Capture One==untitled session==output
I have never taken the time to name session, just leave it untitled as naming it doesn't mean much to me. I have always worked with Capture One this way, since they started with sessions.
This is under win7 64 bit, I wasn't sure of your OS.
No crashes, no problems. After outputting, I will browse this location, and move the images to the working folder for that particular image.