Error trying to fit data to gaussian function: Inf computed by model function, fitting cannot continue

I've got a large number of Datapakets. Some of them are working, while other return the Error.

I can't find any Wrong Data and got no idea, how to fix the Problem.

[Torsten]

If you don't include your data and your code, we don't know either.

Maybe in the evaluation of exp(...), the (...) becomes too large.