Hi, I am having the same trouble. I uploaded, activated, and then tried to add a schedule. I then tried deactivating and then activating the plugin and got the same error. feel free to contact me at donaldsr@tcc.fl.edu if you would like. I get the following error:
WordPress database error: [Table 'rdonalds_wrdp1.wp_schedule' doesn't exist]
INSERT INTO wp_schedule SET schedule_title = 'Test 2', schedule_date = '2008-03-21', schedule_timestart = '08:00:00', schedule_timestop = '09:00:00', schedule_description = 'Test 2'
WordPress database error: [Table 'rdonalds_wrdp1.wp_schedule' doesn't exist]
SELECT scheduleID FROM wp_schedule WHERE schedule_title = 'Test 2' and schedule_date = '2008-03-21' and schedule_description = 'Test 2'