During evaluation of In[135]:= Part::partw: Part 1 of {} does not exist. >>

During evaluation of In[135]:= Part::pspec: Part specification {}[[1]] is neither an integer nor a list of integers. >>

Out[135]= {{m -> -0.1694, c -> 22.1706}, {m -> 3.,
   c -> 0.161533}, {m -> -0.234466 - 0.569087 I,
   c -> (2.93299*10^6 - 970200. m + 1.16247*10^7 m^2 -
     3.843*10^6 m^3)/(
    138600. + 592200. m^2)}, {m -> -0.234466 + 0.569087 I,
   c -> (2.93299*10^6 - 970200. m + 1.16247*10^7 m^2 -
     3.843*10^6 m^3)/(
    138600. + 592200. m^2)}, {m -> -6.02744*10^-8 - 0.447214 I,
   c -> (2.93299*10^6 - 970200. m + 1.16247*10^7 m^2 -
     3.843*10^6 m^3)/(
    138600. + 592200. m^2)}, {m -> -6.02744*10^-8 + 0.447214 I,
   c -> (2.93299*10^6 - 970200. m + 1.16247*10^7 m^2 -
     3.843*10^6 m^3)/(138600. + 592200. m^2)}, {m ->
    6.02744*10^-8 - 0.447214 I,
   c -> (2.93299*10^6 - 970200. m + 1.16247*10^7 m^2 -
     3.843*10^6 m^3)/(138600. + 592200. m^2)}, {m ->
    6.02744*10^-8 + 0.447214 I,
   c -> (2.93299*10^6 - 970200. m + 1.16247*10^7 m^2 -
     3.843*10^6 m^3)/(138600. + 592200. m^2)}, {m ->
    0.165873 - 0.595441 I,
   c -> (2.93299*10^6 - 970200. m + 1.16247*10^7 m^2 -
     3.843*10^6 m^3)/(138600. + 592200. m^2)}, {m ->
    0.165873 + 0.595441 I,
   c -> (2.93299*10^6 - 970200. m + 1.16247*10^7 m^2 -
     3.843*10^6 m^3)/(138600. + 592200. m^2)}}[[{}[[1]]]]