Why I am getting this error "Error evaluating function 'des_setDesSfunPorts': Internal error in SimEvents engine while compiling the model."

I am using Matlab 2011 with SimPower toolboox. I am modelling a power system with 3 three phase sources connected by distributed lines. When I try to use an instrument transformer the simulink give me this error. However, when I use the instrument transformer in another modell it works perfect. Also, the main modell without the instrument transformer works perfect. For this reason, I don't understand this behaviour!

Answer 1

[Devdatt Lad]

This is an internal error and your best bet would be to contact MathWorks Technical Support on this one. http://www.mathworks.com/support/contact_us/