Simbiology Fitting Error with NLME method

Hallo anyone,

I got the following error from the fitting with NLME method:

Message:

Index exceeds the number of array elements (0).

Additional Messages For This Source

Message:

Unable to find a step that will decrease SSE in the Gauss-Newton algorithm while solving PNLS. Returning results from last iteration.

I dont really understand this messages, I was using the GUI, can I get the exact location of the array error? if yes, how?

its written "Returning results from last iteration." but I couldnt find any results, please help

Thanks,

Deni