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Had wondered about the code myself, and this forum posting confirms it: the vtkOpenFOAMReader expects integers for field dimensions.

His input had this:

dimensions      [0 0.5 -0.5 0 0 0 0];

which causes the crash.

The vtkFoamEntryValue::ReadDimensionSet() method in the vtkOpenFOAMReader needs to accept floats. In the stringify routine, will need modified logic for checking, possibly with modified exponents.

Eg, writing the above without any brackets

m0.5/s0.5

looks (IMO) fairly ugly, but with brackets

m^(0.5)/s^(0.5)

looks pretty messy.

These are however, secondary factors. Mostly need to not crash on these types of dimensions.