upgraded to 1.34 still getting the same error:

Can't call method "click" on an undefined value at c:/Perl/lib/WWW/Mechanize.pm line 1541.

eventhough the click function exists in Mechanize.pm

and changed...$mech->click($buttton) to $mech->click_button(value => $button) which resulted in the following error

Can't call method "find_input" on an undefined value at c:/Perl/lib/WWW/Mechanize.pm line 1614.