TWiki Notes

I tried to install TWiki 4.2.2 on a managed hosting plan offered by http://canhost.de. Here are some notes on findings and workarounds.

Symptom: When enabling session management, I get an error message Can't locate object method "generate_id" via package "CGI::Session::ID::". This is also reported e.g. on SessionIdGeneration.

Root Cause: Initializing handlers in Session::_load_pluggables aborts while loading CGI::Session::Serialize::default because Scalar::Util::refaddr is not defined presumably because the web server runtime is outdated. The perl error was caught by an eval and not displayed, therefore the actual error is about Session::ID and not Session::Serialize.

Failed fix: replacing Scalar::Util in the TWiki installation did not work, I assume because it is loaded by perl before TWiki initializes its include path?!?

Fix: replace the CPAN/CGI/Session directory with a older version. I used version 3.95, which is the oldest supported one according to the installation instructions.

Symptom: Editing a page in the Wysiwyg editor doesn't show the page content, but red text about problems retrieving the content.

Root Cause: looking into the TWiki warning log, there are messages:

31 Aug 2008 - 18:47 | TWiki::Plugins::WysiwygPlugin could not be loaded. Errors were:
Too many arguments for Encode::decode_utf8 at .../ib/TWiki/Plugins/WysiwygPlugin.pm line 621, near "Encode::FB_PERLQQ)"

Fix: remove the FB_PERLQQ argument from all calls to encode and decode in WysiwygPlugin? .pm.

My Links

• ATasteOfTWiki - view a short introductory presentation on TWiki for beginners
• WelcomeGuest - starting points on TWiki
• TWikiUsersGuide - complete TWiki documentation, Quick Start to Reference
• Sandbox - try out TWiki on your own
• HenningSpruthSandbox? - just for me

My Personal Data

Note: if personal data is being stored using a secret database, then it is only visible to the user and to administrators.

My Personal Preferences

Uncomment preferences variables to activate them (remove the #-sign). Help and details on preferences variables are available in TWikiPreferences.

• Show tool-tip topic info on mouse-over of WikiWord links, on or off:
  • #Set LINKTOOLTIPINFO = off

Related Topics

• ChangePassword for changing your password
• ChangeEmailAddress for changing your email address
• TWikiUsers has a list of other TWiki users
• UserDocumentationCategory is a list of TWiki user documentation
• UserToolsCategory lists all TWiki user tools