Added more initial guesses to calculation of algebraic variable derivatives to make that calculation more robust. If this continues to fail, we may want to do it more intelligently since it's actually a linear calculation.
Added more initial guesses to calculation of algebraic variable derivatives to make that calculation more robust. If this continues to fail, we may want to do it more intelligently since it's actually a linear calculation.

GutenkunstLab/SloppyCell,GutenkunstLab/SloppyCell