Can't locate object error

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I su'd as root onto my server and installed the following:

HTTP::Cookies (was already up to date)
WWW::Mechanize
WWW::Mechanize::Frames
LWP::Simple

I have a program that uses all three of them.

Here's the thing - on my personal server, my program works perfectly. It logs into a site for me, fills out a form and then submits it.

At work, where I am right now, I have the same program, but when I run it I get the error:

'Can't locate object method "form" via package "WWW::Mechanize::Frames" at myprogram.pl line 41.'

Here is some of the code from the program. Line 41 is commented below:

my $m = WWW::Mechanize::Frames->new( autocheck=>1);
$m->get("http://www.mysite.com/");
my $html = $m->content;
$html =~ s[</body>][$form_data]g;
$m->update_html($html);
$m->form('LoginForm');         ## Line 41
$m->field('login','xxxxxxxx');
$m->field('password','xxxxxx');
$m->click();
[download]

Any idea why this is happening? Is there a module that I'm missing?

My personal server has perl v5.8.8 built for i686-linux. My job/work server has perl v5.8.6 built for x86_64-linux-thread-multi

I need this program to run on my server at work, not my personal one and I know the program is fine since I've tested and debugged on my personal server. Please reply to this thread if you are able to help me solve this problem.
Thank you in advance

Comment on Can't locate object error Download Code

Replies are listed 'Best First'.
Re: Can't locate object error by Corion (Patriarch) on May 21, 2008 at 15:20 UTC
A oneliner just popped into my head: `perl -le "sub UNIVERSAL::versions{ no strict 'refs'; printf qq(%s: %s\ +n), $_, ${$_.qq(::VERSION)}for @{ref $_[0].'::ISA'}}; $_->versions fo +r @ARGV" WWW::Mechanize WWW::Mechanize::Frames` [download] Most likely the version of one of the modules is too old.	[reply] [d/l]
Re^2: Can't locate object error by Anonymous Monk on May 21, 2008 at 16:10 UTC
I changed $m->form to $m->form_name and it now works. So the module was installed successfully after all, but I guess things have changed and 'form' isn't accepted anymore. It could be that my personal server is running an old instance of WWW::MEchanize and thus 'form' works. Whereas on my work server which has the newest installation of wWW::Mechanize, 'form' has now been replaced by 'form_name'. Thanks	[reply]
Re^3: Can't locate object error by Anonymous Monk on May 22, 2008 at 04:44 UTC
Stop guessing :) http://search.cpan.org/src/PETDANCE/WWW-Mechanize-1.34/Changes `1.21_03 Sat Oct 7 01:21:46 CDT 2006 ======================================== [THINGS THAT MAY BREAK YOUR CODE] * The methods $mech->form() and $mech->follow() have been removed. They've been deprecated since 1.10, which was released in Feb 2005 +.` [download]	[reply] [d/l]
Re^2: Can't locate object error by Anonymous Monk on May 21, 2008 at 15:47 UTC
But I just installed the most recent version of WWW::Mechanize and WWW::Mechanize::Frames .... so how could that be? How could my version be old if I just installed it from cpan using the install command?	[reply]
Re^3: Can't locate object error by mandarin (Hermit) on May 21, 2008 at 16:55 UTC
So maybe your version at home is older and the 'form' method has gone away. The documented interface of WWW::Mechanize does not know about it. Try `$m->form_name('LoginForm');` [download] instead.	[reply] [d/l]