Simulink model forces Matlab to crash

Greetings to all.

I'm modeling a big 3-phase electrical transmission system in simulink (for the moment i havent inserted the correct parameters for the system, find attached the file), but after i 'modeled' a part of the network, i saved it, closed it and after all this i cannot open it anymore because Matlab crashes. In the beginning i was getting the error " _ Maximum recursion limit of 500 reached. Use set(0,'RecursionLimit',N) to change the limit. Be aware that exceeding your available stack space can crash MATLAB and/or your computer_" which later i changed the limit to a higher value and it worked. After adding more elements to the model i am not able to open it anymore for the reason which i told (matlab crashes). Am i missing or doing something wrong here (which for sure i am, but cannot understand where)? Please if anyone can help me with this i would appreciate it a lot.