Simulink Multiple Simulations does not work because of "Model Properties"

When i run the multiple simulations function with Fast Restart on my simulations won't run and i get the Diagnostic Msg:

"The 'Model' property must be a character vector corresponding to the model name."

With fast restart off it behaves like it should.

Previously it worked fine even with fast restart on, nothing obvious was changed.

[Alvaro]

Based on the diagnostic, the 'Model' property is not set up correctly. Could you log it to see what value it has?

https://www.mathworks.com/help/control/ref/lti.get.html