Internal error

From Genomics

Detected bug in an extension! Hook wfSplitCategoryPage failed to return a value; should return true to continue hook processing or false to abort.

Backtrace:

#0 /Volumes/dimer_web/WebServer/Documents/genomics/wiki/includes/CategoryPage.php(23): wfRunHooks('CategoryPageVie...', Array)
#1 /Volumes/dimer_web/WebServer/Documents/genomics/wiki/includes/Wiki.php(435): CategoryPage->view()
#2 /Volumes/dimer_web/WebServer/Documents/genomics/wiki/includes/Wiki.php(59): MediaWiki->performAction(Object(OutputPage), Object(CategoryPage), Object(Title), Object(User), Object(WebRequest))
#3 /Volumes/dimer_web/WebServer/Documents/genomics/wiki/index.php(92): MediaWiki->initialize(Object(Title), Object(CategoryPage), Object(OutputPage), Object(User), Object(WebRequest))
#4 {main}