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