Voila, I found the culprit.
In linux box, I changed *vars={'indx':search_form.vars.indx}** *to* vars={
'i':search_form.vars.indx}Note:* key 'indx' is renamed to 'i' (indx is the name of hidden field) I still don't know, why this occurred. it's just a key name (string). still!!!
