> 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).