I've set a custom trigger with execution frequency as Ongoing.
On the first initial run, it'll work properly. If I try to run it again on the same machine, it'll say "no policies were found for the "xxxxxxx" trigger.
I've tried flushing the log and re-running to no avail.
If I edit the policy that contains the custom trigger, and save it exactly as is, it'll work when I re-run the policy.