Task Scheduler missing daily tasks for just 2 days. Why?

Question

I have configured Windows 7 task scheduler to run a daily task at 12:01 AM. It has to start our reporting program that maintains the internal log of its own. It's been working really good since March of this year (for 3 months so far) until May 31 and then June 1st when the task didn't trigger at all. So in the log I have an entry on May 30th and then the next entry is on June 2nd. The question is why it missed those two days???

I exported the task and here it is below.

Also just to let you know, this PC is never turned off or put to sleep. It's our office computer that always stay on. The updates are set up to download and wait. So there's nothing that should've rebooted or tampered with it.

<?xml version="1.0" encoding="UTF-16"?>
<Task version="1.2" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
  <RegistrationInfo>
    <Author>ReportGenerator Autotask</Author>
    <Description></Description>
  </RegistrationInfo>
  <Triggers>
    <CalendarTrigger id="Trigger_ReportGenerator Daily Task. 'c.-program files (x86)-borland-common files-bde-reportgenerator.exe'">
      <StartBoundary>2015-04-30T00:01:00</StartBoundary>
      <Enabled>true</Enabled>
      <ScheduleByDay>
        <DaysInterval>1</DaysInterval>
      </ScheduleByDay>
    </CalendarTrigger>
  </Triggers>
  <Principals>
    <Principal id="Author">
      <UserId>BTR-PC\Manager</UserId>
      <LogonType>InteractiveToken</LogonType>
      <RunLevel>LeastPrivilege</RunLevel>
    </Principal>
  </Principals>
  <Settings>
    <MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy>
    <DisallowStartIfOnBatteries>true</DisallowStartIfOnBatteries>
    <StopIfGoingOnBatteries>true</StopIfGoingOnBatteries>
    <AllowHardTerminate>true</AllowHardTerminate>
    <StartWhenAvailable>false</StartWhenAvailable>
    <RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable>
    <IdleSettings>
      <Duration>PT10M</Duration>
      <WaitTimeout>PT1H</WaitTimeout>
      <StopOnIdleEnd>true</StopOnIdleEnd>
      <RestartOnIdle>false</RestartOnIdle>
    </IdleSettings>
    <AllowStartOnDemand>true</AllowStartOnDemand>
    <Enabled>true</Enabled>
    <Hidden>false</Hidden>
    <RunOnlyIfIdle>false</RunOnlyIfIdle>
    <WakeToRun>false</WakeToRun>
    <ExecutionTimeLimit>PT72H</ExecutionTimeLimit>
    <Priority>7</Priority>
  </Settings>
  <Actions Context="Author">
    <Exec>
      <Command>C:\Program Files (x86)\Borland\Common Files\BDE\ReportGenerator.exe</Command>
      <Arguments>-daily -email="[e-mail]; [e-mail]"</Arguments>
    </Exec>
  </Actions>
</Task>