Thanks Michael for sharing your solution.
For anyone else getting this timezone error, please see the section 'Time zone code improvements' under 'Possible issues that may affect you in Moodle 2.9' in the documentation Upgrading to Moodle 2.9.
Thanks Michael for sharing your solution.
For anyone else getting this timezone error, please see the section 'Time zone code improvements' under 'Possible issues that may affect you in Moodle 2.9' in the documentation Upgrading to Moodle 2.9.