[Ipopt] Empty x

Victor Fachinotti vfachino at intec.unl.edu.ar
Wed Aug 3 13:53:42 EDT 2016

I would like to thank Stefan Vigerske for his quick answer. So, I had made a
mistake in my callback function, which did not return 'true'. 

Now, after fixing it, IPOPT passes several iterations but finds a bug at a
given iteration inside this callback function because x.x=[]. 

Why is x empty? 

How can I proceed in this case?

Thank you again,

Victor Fachinotti

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