My_solver_is_refusing_to_set_up_equations_for_a_tile._What's_happening?

> For some reason, my solver refuses to set up solver equations for tile 
> numbers 0 and 1 although it does seem to set up perturbed values etc for the
> condeqs. Interestingly, after the solver decides to start working
> in tile 2, it produces results that are in line with those expected.

Well, this will happen if the data in a tile is flagged in its entirety. Since equations corresponding to flagged points are skipped, the solver is left with nothing. You can get a similar error if you have no solvable parameters (which is usually due to a bad solvables list).