Tinycore versions 2.0 to 2.6.1 must use the tce-notify.tcz extension. Download it first if using cloud mode before installing other extensions. If using a persistent tce directory, simply install it and it will be available upon subsequent boots.
As the trigger to call depmod and/or ldconfig has been moved away from extension names, and the repo recently converted to one suffix (.tcz) many apps will not work if tce-notify is not installed or the current version of Tinycore is used. New users are advised to run the current version of Tinycore, but tce-notify is available to support older versions.