eFLL (Embedded Fuzzy Logic Library) - Fuzzy Logic on Arduino

I have same problem about 45 rules and I am not able to run more than 4 rules when I convert the file to Arduino. Is there any restriction on the number of rules? I'm running this code in a Arduino Mega the code runs properly up to 4 rules but when I add the 5th rule no awnsers in the monitor, no errors or warning. Just nothing appears.