scheduled report email double firing

I have created a couple of scheduled reports to email the results of the report when they run.  While testing the reports everything works as it should and I am ready to place them on their schedule.  While testing the schedule function, the scheduler appears to be double-firing the email.  I get two identical emails at the same time.  When I manually run the schedule, I only get the single email.  Has anyone had a similar experience when using the report scheduler?  I am running NPM 10.7 Orion Platform 2014.1.0.  TIA for any assistance.