Timely has decided that they have a better way to update their plug-in by going outside the normal (great, perfectly functional) WordPress update system - their system DOES NOT WORK! I get multiple errors even when following their (contorted) instruction to the letter. Crash! Had to (manually) go back to previous version.
Great calendar, but they need to work within the normal update system. One of the reasons I run Linux is the consolidated update system. Please don't make WordPress updates like Windows!