I have changed the config file a few times with no bad luck....
I am not sure why you would have had trouble with that update, I do not think there is a max...
However, I am going to suggest that you post a new thread re trying to increase logic conditions as I am not sure about that one.
You might keep in mind that your machine will run slower with more conditions, I try to limit it to 2 or 3 and have had relatively good luck with that.
As I mentioned, post a new thread re number of logic conditions and perhaps someone else will have good info to share.
My 'secret' goal is to push EA Studio until I can net 3000 pips per day....