Error in bulk collect into nested table

Question

I keep getting an error while trying to compile this line:
fetch c_juros bulk collect into wrk_juros_plano(p_ind_segreg);
LINE/COL ERROR
0/0      PLS-00801: internal error [74306]When i put that single line into comments it goes fine. Sure it doesn't do what I want.
The data structure i use is as follows:
  cursor c_juros(p_ind_segreg in varchar2) is
    select (((power(1 + (i.prc_juros_atuari_ano / 100), 1 / 12) - 1) * 100) / 100) prc_juros_efetiv_mes,
           i.dat_inic_vigenc,
           (nvl(i.dat_fim_vigenc, sysdate) + 1) dat_fim_vigenc,
           i.ind_segreg
      from v_indexador_taxa_atuarial i
     where i.ind_segreg = p_ind_segreg
     order by i.dat_inic_vigenc;
  type t_juros_plano     is table of c_juros%rowtype;
  type t_tab_juros_plano is table of t_juros_plano index by binary_integer;
  wrk_juros_plano t_tab_juros_plano;the code goes like this:
  begin
    if not(wrk_juros_plano.exists(p_ind_segreg))
    then
      if c_juros%isopen
      then
        close c_juros;
      end if;
      open c_juros(p_ind_segreg);
      wrk_juros_plano(p_ind_segreg) := t_juros_plano();
      fetch c_juros bulk collect into wrk_juros_plano(p_ind_segreg);
    end if;
  ...p_ind_segreg is my input parameter, that should be the index of the array.
The purpose is to create the parameter indexed element if it doesn't already exist, fetching it
from the cursor, that defines a nested table.
I tried removing the initialization line to no effect, among other things.

Answer 1

Ok, I just found out a way around it. It works, but that error is probably a bug, cause workarounds are not really cute.
I declared a nested table compatible with the element from the associative array:
wrk_juros t_juros_plano;and chaged that line that was causing the error
fetch c_juros bulk collect into wrk_juros_plano(p_ind_segreg);for
fetch c_juros bulk collect into wrk_juros;
wrk_juros_plano(p_ind_segreg) := wrk_juros;Awesome =\