on Sourceforge, the link to the project homepage is broken. http://zoomifyimage.sourceforge.net/ redirects to http://www.agile-software.com/ta/sites/aes/content/home/products/agileimage which is 404.
this is a feature request, moved to http://taskcoach.uservoice.com/pages/26465-desktop-version-windows-linux-mac-of-task-coach/suggestions/291954-add-help-show-error-messages-menu-item?ref=title.