OSSmooth Lattice Failure (Error 8006)

Hi,

I'm trying to learn how to use the lattice optimisation tool on Optistruct and I've had success using volume fraction as the constraint and compliance as the objective on a tutorial model. However for my project I need to use compliance as the constraint and minimise mass as the objective but when I try this on the tutorial model I get the following 'Error 8006 in datamr() during 'locate' operation.'

Any ideas on where I'm going wrong? Files attached

Thanks in advance,

Tom

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