Warning: Duplicate Entry for key 'PRIMARY' query

Elysia cron seems to be working fine despite the following nasty errors I get every time I save the configuration on the settings page:

user warning: Duplicate entry 'rules_scheduler_cron' for key 'PRIMARY' query: insert into elysia_cron (rule, disable, running, last_run, last_aborted, abort_count, last_execution_time, execution_count, avg_execution_time, max_execution_time, last_shutdown_time, name) values ('*/5 * * * *', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'rules_scheduler_cron') in /var/www/sites/all/modules/elysia_cron/elysia_cron.module on line 395.
user warning: Duplicate entry 'node_cron' for key 'PRIMARY' query: insert into elysia_cron (disable, running, last_run, last_aborted, abort_count, last_execution_time, execution_count, avg_execution_time, max_execution_time, last_shutdown_time, name) values (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'node_cron') in /var/www/sites/all/modules/elysia_cron/elysia_cron.module on line 395.
user warning: Duplicate entry 'node_cron' for key 'PRIMARY' query: insert into elysia_cron (disable, running, last_run, last_aborted, abort_count, last_execution_time, execution_count, avg_execution_time, max_execution_time, last_shutdown_time, name) values (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'node_cron') in /var/www/sites/all/modules/elysia_cron/elysia_cron.module on line 395.
user warning: Duplicate entry 'node_cron' for key 'PRIMARY' query: insert into elysia_cron (disable, running, last_run, last_aborted, abort_count, last_execution_time, execution_count, avg_execution_time, max_execution_time, last_shutdown_time, name) values (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'node_cron') in /var/www/sites/all/modules/elysia_cron/elysia_cron.module on line 395.
user warning: Duplicate entry 'system_cron' for key 'PRIMARY' query: insert into elysia_cron (rule, disable, running, last_run, last_aborted, abort_count, last_execution_time, execution_count, avg_execution_time, max_execution_time, last_shutdown_time, name) values ('0 * * * *', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'system_cron') in /var/www/sites/all/modules/elysia_cron/elysia_cron.module on line 395.
user warning: Duplicate entry 'system_cron' for key 'PRIMARY' query: insert into elysia_cron (disable, running, last_run, last_aborted, abort_count, last_execution_time, execution_count, avg_execution_time, max_execution_time, last_shutdown_time, name) values (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'system_cron') in /var/www/sites/all/modules/elysia_cron/elysia_cron.module on line 395.

I get a few of these errors for every cron job, this is just a small sample I copied from the error messages.