I upgraded my plugins (ther are many installed) and added a few new plugins, and now I get an error when I try to return to Support.WebHome

I am getting the following error when I navigate from my configuration page (which displays OK) to WebHome:

Can't locate object method "topicExists" via package "Foswiki" at /usr/local/www/foswiki/lib/Foswiki/Users/TopicUserMapping.pm line 609.

at /usr/local/www/foswiki/lib/Foswiki/Users/TopicUserMapping.pm line 609
Foswiki::Users::TopicUserMapping::eachGroupMember('Foswiki::Users::TopicUserMapping=HASH(0xb31fb8)', 'AdminGroup') called at /usr/local/www/foswiki/lib/Foswiki/UserMapping.pm line 334
Foswiki::UserMapping::isInGroup('Foswiki::Users::TopicUserMapping=HASH(0xb31fb8)', 'PaulHarrison', 'AdminGroup') called at /usr/local/www/foswiki/lib/Foswiki/Users/TopicUserMapping.pm line 1011
Foswiki::Users::TopicUserMapping::isAdmin('Foswiki::Users::TopicUserMapping=HASH(0xb31fb8)', 'PaulHarrison') called at /usr/local/www/foswiki/lib/Foswiki/Users.pm line 567
Foswiki::Users::isAdmin('Foswiki::Users=HASH(0x933708)', 'PaulHarrison') called at /usr/local/www/foswiki/lib/Foswiki/Access.pm line 114
Foswiki::Access::checkAccessPermission('Foswiki::Access=HASH(0x101b788)', 'VIEW', 'PaulHarrison', undef, undef, 'InterWikis', 'System') called at /usr/local/www/foswiki/lib/Foswiki/Func.pm line 1003
Foswiki::Func::checkAccessPermission('VIEW', 'PaulHarrison', undef, 'InterWikis', 'System') called at /usr/local/www/foswiki/lib/Foswiki/Plugins/InterwikiPlugin.pm line 72
Foswiki::Plugins::InterwikiPlugin::initPlugin('WebHome', 'System', 'PaulHarrison', 'System') called at /usr/local/www/foswiki/lib/Foswiki/Plugin.pm line 231
Foswiki::Plugin::registerHandlers('Foswiki::Plugin=HASH(0xd493c8)', 'Foswiki::Plugins=HASH(0x621368)') called at /usr/local/www/foswiki/lib/Foswiki/Plugins.pm line 244
Foswiki::Plugins::enable('Foswiki::Plugins=HASH(0x621368)') called at /usr/local/www/foswiki/lib/Foswiki.pm line 1607
Foswiki::new('Foswiki', undef, 'Foswiki::Request=HASH(0x906330)', 'HASH(0x900878)') called at /usr/local/www/foswiki/lib/Foswiki/UI.pm line 293
Foswiki::UI::_execute('Foswiki::Request=HASH(0x906330)', 'CODE(0x905e98)', 'view', 1) called at /usr/local/www/foswiki/lib/Foswiki/UI.pm line 275
Foswiki::UI::handleRequest('Foswiki::Request=HASH(0x906330)') called at /usr/local/www/foswiki/lib/Foswiki/Engine/CGI.pm line 29
Foswiki::Engine::CGI::run('Foswiki::Engine::CGI=HASH(0x8310d8)') called at /usr/local/www/foswiki/bin/view line 45

When I deactivate all of the plugins (there are 36 activated) I still get the error 'Can't locate object method "topicExists" via package "Foswiki" at /usr/local/www/foswiki/lib/Foswiki/Users/TopicUserMapping.pm line 609'. Also, I have installed the Pattern Skin. It was upgraded along with the other plugins. Pattern Skin is not used to display the configuration page. I did not see a checkbox to disable the Pattern Skin in the plugins configuration page. How would I disable the skin to test to see if it is the problem?

Thanks in advance

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I'm going to guess that TopicUserMapping is not backwards compatible. I'll investigate it further, but if you don't have a backup, you could either look for the ".bak" files renamed when the extension was updated, or install the older version of TopicUserMappingContrib here: http://foswiki.org/bin/viewfile/Extensions/TopicUserMappingContrib?filename=TopicUserMappingContrib.tgz;rev=5

Another option would be to upgrade to 1.1.2.

-- GeorgeClark - 10 Nov 2010

Confirmed that TopicUserMappingContrib is not backwards compatible.

-- GeorgeClark - 10 Nov 2010