weird error while updating row

hi, i'm getting this exception:

java.sql.Exception: 1 >= 1

while invoking the ResultSet's updateRowMethod.

this is my code:
--------------------------------------------------------------------------
rsGlAccount.updateString(GlAccount.getBDescription(), f.getDescription());
             rsGlAccount.updateString(GlAccount.getBShortDesc(),
f.getShortDesc());
             rsGlAccount.updateString(GlAccount.getBType(), f.getType());
             rsGlAccount.updateString(GlAccount.getBDrIndicator(),
                                      (f.getDrIndicator()));
             rsGlAccount.updateString(GlAccount.getBCtaMayor(),
                                      (f.getCtaMayor() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBCommable(),
                                      (f.getCommable() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBKeepSaleSt(),
                                      (f.getKeepSaleSt() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBFsCode(),
f.getFsCode());
             rsGlAccount.updateString(GlAccount.getBCategCode(),
f.getCategCode());
             rsGlAccount.updateString(GlAccount.getBValidEntity(),
f.getValidEntity());
             rsGlAccount.updateString(GlAccount.getBAllowAr(),
                                      (f.getAllowAr() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowAp(),
                                      (f.getAllowAp() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowIn(),
                                      (f.getAllowIn() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowFa(),
                                      (f.getAllowFa() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowGl(),
                                      (f.getAllowGl() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBActive(),
                                      (f.getActive() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowAppl1(),
                                      (f.getAllowAppl1() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowAppl2(),
                                      (f.getAllowAppl2() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowAppl3(),
                                      (f.getAllowAppl3() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowAppl4(),
                                      (f.getAllowAppl4() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowAppl5(),
                                      (f.getAllowAppl5() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowCp(),
                                      (f.getAllowCp() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBTransfer(),
                                      (f.getTransfer() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBAllowQty(),
                                      (f.getAllowQty() ? "S" : "N"));
             rsGlAccount.updateString(GlAccount.getBConvert(),
                                      (f.getConvert() ? "S" : "N"));
        rsGlAccount.updateRow();
--------------------------------------------------------------------------

and bang, it throws the exception, the funny thing is that the record is
updated in the database, i'm trying to figure what is causing the error,
  but i've no success, so any help would be greatly appreciated.

i'm using struts 1.0.2, tomcat 4.1.12 jbuilder 8, postgresql
7.1.3-4bp.2, the pg73jdbc73.jar on redhat linux 7.2

thanks in advance and best regards