Using Dymola model in Simulink gives error : newDymolaGui

I have a Dymola model which I exported to Simulink as an s-function. In my Simulink model it is shown as a "DymolaBlock". By using the sim command in Matlab I start the model which works without problems. But now i´m trying to run the simulation several times which causes following error after a few simulation runs:

Error evaluating 'InitFcn' callback of SubSystem block (mask)

'DP/DymolaBlock/compmodel'.

Callback string is 'newDymolaGui('DP/DymolaBlock','Verify');'

Trying to recombile the DymolaBlock gives me the following:

Error using ddeexec

The first argument 'channel' is not valid.

Error in newDymolaGuiJava

Error in newDymolaGuiJava

Error in newDymolaGuiJava

Error in newDymolaGuiJava

Error in newDymolaGui

Error while evaluating UIControl Callback.

I have to restart Matlab to get the model to work again. Anyone knows what the cause of this problem is, and how to get rid of it?

Answer 1

[Claerence Pfaffmann]

I think I found a solution by myself.

In the Matlab console, just klick on the Error Message "InitFcn" and a window will pop up showing settings for the DymolaBlock. In the InitFcn field there is the command 'newDymolaGui('DP/DymolaBlock','Verify');' This command was created automatically by Simulink. I ended up deleting it, so that the InitFcn field is just empty.

After that I could simulate my model multiple times in the same script without getting the error message. I still dont know if deleting this command has a effect to the model/simulation. So far it works and the simulation output seems to be unaffected by that.