Thank you for getting back to us, WAGO Support Team. I try to avoid crashes these days by saving often and restarting a fresh copy of E!Cockpit before issues start appearing. Next crash I will save any error messages and send to you by email.
The initial thing to look into as far as I am concerned is large visu's with many elements. Mine are often dynamic, i.e. color, text, visibility of visu elements change through properties which in turn are set by code. On large systems we can have visu's with hundreds of elements, large and small. That is were I see most problems. Typical demo screens with up to a few dozen elements give no problems.